Algebra 2 Practice Item Guide April 2012 18 questions

Algebra 2Practice Item Guide

April 201218 questions

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TECHNOLOGY-ENHANCED ITEM TYPES

TECHNOLOGY-ENHANCED ITEM TYPES

TECHNOLOGY-ENHANCED ITEM TYPES

81

1.

1.

2.

2.

3.

HINT: Graph & compare. (Remember parenthesis!)

3.

4.

HINT: Graph! (Remember parenthesis!)

4.

5.

HINT: Graph! (Remember parenthesis!)

5.

6.

6.

HINT: Stat-Edit (Enter data). Stat-Plot (determine shape). Stat-Calc pick matching regression type.

7.

7.

HINT: Multi-step! N = 968 x-bar = 108 sigma = 11 x = 125

P(z>1.55) = 1 - .9394 (table lookup) = .0606

Final answer is probability times #data points = 968 * .0606 = 58.66

125 1081.545

11z

8.

8.

HINT: Distributive – you distributed Commutative – you Changed Order Associative – you associated the middle # with the last #

9.

47

9.

HINT: Use logic! a1 = 8 a2 = 2(8) + 5 = 21 a3 = 2(21) + 5 = 47

10.

10.

HINT: Find graph with same y-value (range!). Graph & compare!

11.

11.

HINT: Think of the question as: Describe the x-values (intervals) where the graph is going up. Then just graph and look!

12.

12.

HINT: Graph and look! Think “HOY VUX”. Horizontal (HOY): y = 4 Vertical (VUX): x = 3

13.

13.

HINT: Committees = Combinations! 3C1 * 7C2 = 63

14.

14.

HINT: Same logic as #11. Think of the question as: Describe the x-values (intervals) where the graph is going up. Then just graph and look!

15.

15.HINT: Must find the % of data first. 23750/50000 = .475 = 47.5% Empirical rule: Pick the 2 sections to the right (or left) of the mean.

16.

16.

HINT: Zeros = x-intercepts! Graph. 2nd Calc zero x = 2.5

17.

17.

HINT: Graph!

18.

18.

HINT: Substitute. 5x -4(x2-x-6) – 11 = 0 Distribute, factor, set factors to zero. OR graph y = 5x -4(x2-x-6) – 11 and find x-intercepts once you are already equal to zero!