Integrated Algebra - January 2009

12 In the right triangle shown in the diagram below, what is the value of x to the nearest whole number?

(1) 12       (3) 21
(2) 14      (4) 28



14 What are the roots of the equation x2 – 10x + 21 = 0?

(1) 1 and 21          (3) 3 and 7
(2) –5 and –5        (4) –3 and –7

15 Rhonda has $1.35 in nickels and dimes in her pocket. If she has six more dimes than nickels, which equation can be used to determine x, the number of nickels she has?

(1) 0.05(x + 6) + 0.10x = 1.35
(2) 0.05x + 0.10(x + 6) = 1.35
(3) 0.05 + 0.10(6x) = 1.35
(4) 0.15(x + 6) = 1.35

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