Find the vertex, focus, and directrix of the parabola.- 
x2 = y
A. Vertex: V(0, 0); focus: F(0, 8); directrix: y = -8
B. Vertex: V(0, 0); focus: F(0, -8); directrix: y = -8
C. Vertex: V(0, 0); focus: F(0, -8); directrix: y = 8
D. Vertex: V(0, 0); focus: F(-16, 0); directrix: x = 8
Answer: C
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A. t = –36 B. t = 108 C. t = 36 D. t = 72 E. t = 34
Solve the equation.2a = -14
A. 1 B. 16 C. -16 D. -7
Decide whether the given number is a solution to the equation preceding it.
+ 
= 1; -4
A. Yes B. No
Solve. If an object is propelled upward from a height of 240 feet at an initial velocity of 32 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 - 3)(t + 5); 3 sec B. -16(t - 3)(t - 5); 3 sec C. -16(t + 3)(t + 5); 5 sec D. -16(t + 3)(t - 5); 5 sec