Solve the problem.A rock is propelled upward from the top of a building 90 feet tall at an initial velocity of 104 feet per second. The function that describes the height of the rocket in terms of time t is 
Determine the time at which the rock reaches its maximum height.
A. 6.5 sec
B. 2.6 sec
C. 5.2 sec
D. 3.25 sec
Answer: D
You might also like to view...
Solve the inequality and graph the solution on the real number line
?
?
A. 
B. ?
C.
D.
E.
Industry standards suggest that 13% of new vehicles require warranty service within the first year. Jones Nissan in Sumter, South Carolina, sold 15 Nissans yesterday.
| (a) | What is the probability that none of these vehicles requires warranty service?(Round your answer to 4 decimal places.) |
| Probability |
| (b) | What is the probability exactly one of these vehicles requires warranty service? (Round your answer to 4 decimal places.) |
| Probability |
| (c) | Determine the probability that exactly two of these vehicles require warranty service. (Round your answer to 4 decimal places.) |
| Probability |
| (d) | Compute the mean and standard deviation of this probability distribution. (Round your answers to 2 decimal places.) |
| Mean µ | |
| Standard deviation ? | |
If the following defines a one-to-one function, find its inverse. If not, write "Not one-to-one."f(x) = x3 - 9
A. Not one-to-one
B. f -1(x) = 
C. f -1(x) = x + 9
D. f -1(x) = ±
Solve the discount problem.Peggy received a $21.80 discount on an office chair that normally sells for $109.00. Find the discount rate.
A. 1% B. 80% C. 20% D. 8%