Write the polar equation in terms of x and y.r = 
A. 4x + 2y = 5
B. 2x + 4y = 5
C. 2x + 4y = 25
D. 4x + 2y = 25
Answer: B
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Solve the system by elimination.6x - 12 = 6y-2x + 4y = -12
A. {(-3, -3)} B. {(-2, -4)} C. {(x, y)| -2x + 4y = -12} D. ?
Perform the indicated operation. Where possible, reduce the answer to its lowest terms.
+ 
A. 
B. 
C. 
D. 
Solve the equation for the specified variable.S = 2?rh + 2?r2 for h
A. h = 2?(S - r)
B. h = 
- 1
C. h = S - r
D. h = 
Solve the problem.The motion of a projectile that is fired at a 60° angle with the horizontal is given by x = 
t, 
for t in 
Suppose a projectile is fired with an initial velocity of 300 feet per second at an angle of 60° with the horizontal. Find (a) the time when it strikes the ground and (b) the range (horizontal distance covered).
A. (a) 9.4 sec (b) 2436 ft B. (a) 16.2 sec (b) 2436 ft C. (a) 4.7 sec (b) 352 ft D. (a) 8.1 sec (b) 3164 ft