Solve the problem.The equation for free fall at the surface of Planet X is 
with t in seconds. Assume a rock is dropped from the top of a 
cliff. Find the speed of the rock at 
A. 52.85 m/sec
B. 108.7 m/sec
C. 53.85 m/sec
D. 107.7 m/sec
Answer: D
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Evaluate the expression.
A. 26 B. 13 C. 15 D. 16
Solve the problem.A coin is tossed upward from a balcony 
high with an initial velocity of 
During what interval of time will the coin be at a height of at least 
(h = -16t2 + vot + ho.)
A. 4 ? t ? 5 B. 0 ? t ? 1 C. 0 ? t ? 5 D. 5 ? t ? 10
Find the unit rate.In a region, the total number of students enrolled in public schools in a recent year was 422,265. At the same time, there were 24,368 public school teachers. Write a unit rate in students per teacher. Round to the nearest whole.
A. 16 students/teacher B. 19 students/teacher C. 17 students/teacher D. 18 students/teacher
Write the number as a fraction. Do not simplify.28.85
A. 
B. 
C. 
D. 