Solve the problem.A man 6 ft tall walks at a rate of 3 ft/s away from a lamppost that is 14 ft high. At what rate is the length of his shadow changing when he is 25 ft away from the lamppost?
A. 
ft/s
B. 
ft/s
C. 
ft/s
D. 
ft/s
Answer: B
Mathematics
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Provide an appropriate response.True or False? Slope is the term used when expressing the rise over run of a road as a percentage.
A. True B. False
Mathematics
Solve the problem.A rock falls from a tower that is 78.4 m high. As it is falling, its height is given by the formula 
with t in seconds. How many seconds will it take for the rock to hit the ground (h = 0)?
A. 1254.4 sec B. 8.6 sec C. 8.9 sec D. 4 sec
Mathematics
Find the amplitude, period or displacement.Find the period of y = 5 sin 
.
A. 5?
B. 6?
C. 3?
D. 
Mathematics
Express the number in scientific notation.0.000315
A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
Mathematics