Replace the polar equation with an equivalent Cartesian equation. 2r cos ? + 8r sin ? = 1
A. 2x + 8y = x2 + y2
B. 
+ 
= 1
C. 2y + 8x = 1
D. 2x + 8y = 1
Answer: D
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Solve. If an object is propelled upward from a height of 112 feet at an initial velocity of 96 feet per second, then its height h, in feet, after t seconds is given by the expression 
Factor the expression. After how many seconds will the object hit the ground?
A. -16(t - 1)(t - 7); 1 sec B. -16(t + 1)(t + 7); 7 sec C. -16(t - 1)(t + 7); 1 sec D. -16(t + 1)(t - 7); 7 sec
Solve the equation.
+ 1 = - 
A. 
B. 
C. 
D. 
Perform the following division.
A. 13 R1 B. 13 C. 13 R2 D. 14 R1
Solve the problem.A formula used to determine the velocity v in feet per second of an object (neglecting air resistance) after it has fallen a certain height is 
where g is the acceleration due to gravity and h is the height the object has fallen. If the acceleration g due to gravity on Earth is approximately 32 feet per second, find the velocity of a bowling ball after it has fallen 90 feet. (Round to the nearest tenth.)
A. 13.4 ft per sec B. 53.7 ft per sec C. 75.9 ft per sec D. 5,760 ft per sec