Problem 1 :
When the linear function y = f(x) is graphed in the xy-plane, the graph contains the corresponding values of x and f(x) shown in the table above. Which of the following could represent the function?
A) f(x) = 3x + 12
B) f(x) = 3x + 15
C) f(x) = 15x + 12
D) f(x) = 15x + 15
Solution :
Problem 2 :
The height of a rocket launched from a rooftop can be modeled by the equation h = -16s^{2} + 64s + 21, where h is the height of the rocket above the ground, in feet, and s is the number of seconds since the rocket was launched. Which of the following represents the height, in feet, of the rooftop from which the rocket was launched?
A) 0
B) 16
C) 21
D) 64
Solution :
Problem 3 :
If h(–1) = 3 and h(0) = 5 in linear function h, which of the following is the equation of function h?
A) h(x) = 2x + 5
B) h(x) = 2x + 3
C) h(x) = 2x
D) h(x) = 3x + 5
Solution :
Problem 4 :
Which of the following equations correctly expresses r in terms of p and s if the relationship between the numbers p, r, and s can be expressed as p = 13r – 6s?
Solution :
Problem 5 :
Right triangle ABC has sides of the following lengths : AB = 165, BC = 280, and AC = 325. Another triangle, LMN, is similar to ABC such that A corresponds to L and B corresponds to M. What is the value of cos(L)?
Solution :
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