Review of the rest of topics Exponential Equations and Interest Problems

Review of the rest of topics

Exponential Equationsand

Interest Problems

The Mini-Lessons are very helpful to study

•Mini-lessons can be found on our website:

bit.ly/ALG2ct

Think About Others• The Regents is coming up very soon.• Talking makes it hard for everyone

to learn.• You cannot interrupt the mini-

lesson…IT LOWERS the CLASSES REGENTS SCORE!!!

(with less worktime and less effective lessons, how could it not)

• They give us the formula. • We have to figure out where to put each

number in that formula

• V = Pert

P is the principal initially invested.

•What is the value of P?

•P = $1200

• V = Pert

• e is the base of a natural logarithm.

• The base of ln x (the natural logarithm) is e!!!

Here is where to find e^ on your calculator

•V = Pert

r is the rate of interest.

•What is the value of r?• The rate is 6.5%...REMEMBER!

Divide by 100 before using!!!6.5/100 = .065 r = .065

•V = Pert

t is for years

•What is t?

•10 years • t = 10

V = Pert

V = 1200 e^(.065*10)

V = 2298.648995…P = $1200e is er = .065t = 10

V 2298.65

• Be careful!!!

• This step is where the most mistakes are made.• Don’t forget the parenthesis!!!

2( x2 + 4x )

• If both bases are the same, then you know for a fact that the exponents have to be the same, too.

(if same, eliminate)

• Divide both sides by 2

• This is what is left when you divide by 2

• Add 3 to both sides

• Factor:(easy, 3 and 1 are only options)

• What makes the left side 0?-1 makes it 0-3 makes it 0.

• The solutions are:

We have gone over 80% of the Pre-Test problems during mini-lessons

• Your last Post-Test of the year will be on Friday.

• From this point on, we will have 2 small quizzes a week. This will test your knowledge of Trig and all the other outcomes we have done this year.

• You will turn in your Pre-Test with every problem done right before the Post-Test on Friday. If every problem is shown correctly, you will receive an E. (Remember, if you are stuck, solutions to these problems can be found online)

• Good luck on your final Post-Test!!!!

Today, we will meet in Responsibility Teams. Your Team is required to follow

UR rules while in your team.

1. If you have a question ask it.2. Make sure everyone in the

group is working!3. If everyone is stuck, work on it

together. If somebody knows, teach your group!!!

Responsibility Teams