Find the vertex, focus, and directrix of the parabola. Graph the equation.y2 = 16x
A. vertex: (0, 0)
focus: (0, 4)
directrix: y = -4
B. vertex: (0, 0)
focus: (0, 4)
directrix: y = -4
C. vertex: (0, 0)
focus: (-4, 0)
directrix: x = 4
D. vertex: (0, 0)
focus: (4, 0)
directrix: x = -4
Answer: D
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- 8
A. 12
B. 
C. 
D. 108
Find the limit.
A. -1
B. 
C. 1
D. No limit
Solve the problem.Tom and Larry are food inspectors at a cookie making company. Tom tests every 8th batch of dough for fat percentage. Larry tests every 28th batch of dough for carbohydrate percentage. If they both start working at the same time, which batch will be the first that they both test?
A. batch 56 B. batch 28 C. batch 14 D. batch 112
A pair of dice is cast, and the number that appears uppermost on each die is observed. ? Find the probability of the event that the sum of the numbers is 8. ?
A. 
B. 
C. 
D. 
E. 