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Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! What do you need to know? Review time is essential outside of the classroom Bring in $10 for your KEY. In Class Exam will be Wednesday, January 18th > This will replace your lowest unit exam Your last day to hand in missing assignments is Thursday, January 12th. If you want to rewrite your probability exam, you need to schedule it on your own time. Please confirm with me ahead of time. Diploma is Wednesday, January 25th at 9:00. YOU CANNOT BE LATE.

Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

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Page 1: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Welcome back!Crunch time is on! 6 more classes to prepare for your diploma!

What do you need to know?

­ Review time is essential outside of the classroom

­ Bring in $10 for your KEY.

­ In Class Exam will be Wednesday, January 18th­­­> This will replace your lowest unit exam

­ Your last day to hand in missing assignments is Thursday, January 12th.

­ If you want to rewrite your probability exam, you need to schedule it on your own time. Please confirm with me ahead of time.

­ Diploma is Wednesday, January 25th at 9:00. YOU CANNOT BE LATE.

Page 2: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Diploma Review ­ Exponential Functions

Relations and Functions: weighting 50% (about 20 questions)

This includes Rational Expressions, Exponential Functions, Log Functions, Polynomial Functions, Sinusoidal Functions.

Page 3: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Diploma Review ­ Logarithmic Functions

Relations and Functions: weighting 50% (about 20 questions)

This includes Rational Expressions, Exponential Functions, Log Functions, Polynomial Functions, Sinusoidal Functions.

Page 4: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Generally, an exponential function is in the form 

where ''a"' represents the initial value  ''b"' represents the rate of change

a can not equal zerob can not equal one

a) domainb) rangec) x interceptd) y intercepte) end behaviorf) asymptote

Example 1

Page 5: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

For the graph of 

a) domain

b) range

c) x intercept

d) y intercept

e) asymptote

f) calculator ..if you have the old system how can you enter this?

g) end behavior

h) Algebraically determine and graph the inverse function.

Example 2

Remember:To get the inverse we interchange the x and y values in an equation.

E.g.

Page 6: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Solving Equations

When x is the base, cancel out the exponent by using the reciprocal power.Isolate x first.

Example 1   Solve for x.

a)

b)When x is the exponent, write with a common base and eliminate the bases.Isolate the power first.

c)

Page 7: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

d) Use logs to solve these ones

Page 8: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

e) Solve this one algebraically

Page 9: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Example 2

Page 10: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

 a )  b)

Example 3 Change to log form.

Page 11: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

b)

c)

a)

ln x = 2 f)

Example 4 Solve, to the nearest hundredth, where applicable.

*solve graphically

Page 12: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Example 5

If 

find the value of k to the nearest whole number.

and

Page 13: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Properties of Logs

.

Example 1

Use the laws of logarithms to simplify to a single logarithm

Page 14: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

The expression is equivalent to

A.

B.

C.

D.

Example 2

Page 15: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population
Page 16: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Word Problems

The population is given by where y is the population size and x is the number of years.

a) What does the 1500 represent?

b) What is the rate of growth?

c) Predict the population in 10 years

d) When in the population at 10000?

Example 1

Page 17: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Example 2

Page 18: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Compound Interest

A....accumulated amount (end amount)P... initial value (start amount)i..... interest per period 

(annual rate divided by compounding factor)n... number of compounding periods 

(years times the compounding factor)

Compounding factors: annually  1semi­annually 2quarterly 4monthly 12

Ex: 1500 is invested at 3% compounded semi­annually for 5 years.       Determine the end balance

Page 19: Welcome back! · Welcome back! Crunch time is on! 6 more classes to prepare for your diploma! ... d) y intercept e) end behavior f) asymptote Example 1. For the graph of ... A population

Half Life Problems

Caffeine has a half life of 8 hours. How long will it takefor 370 mg to decay to 80 mg?

Doubling, Tripling, etc...and

A population of butterflies double every two weeks. After 10 weeks there are 1920 butterflies. How many were there to start with?