Solve the problem.A rock falls from a tower that is 480 feet high. As it is falling, its height is given by the formula 
How many seconds will it take for the rock to hit the ground 
Round to the nearest tenth, if necessary.
A. 21.9 sec
B. 21.5 sec
C. 14,400 sec
D. 5.5 sec
Answer: D
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Use the appropriate rounding rule to answer the question with the correct precision or correct number of significant digits.Find your speed by dividing the distance you traveled, 267 kilometers, by the time, 2.1 hours.
A. 127.1 kilometers per hour B. 100 kilometers per hour C. 130 kilometers per hour D. 127 kilometers per hour
Use front-end rounding to round each number. Then, add or subtract the rounded numbers to get an estimated answer. Finally, find the exact answer.What is 2.922 less than 5.28?
A. Estimate: 2; exact: 2.368 B. Estimate: 3; exact: 3.368 C. Estimate: 2; exact: 2.358 D. Estimate: 2; exact: 2.362
Graph the polynomial function. Use synthetic division and the remainder theorem to find the zeros.f(x) = x3 + 9x2 - 108
A. 6 (multiplicity 2), -3;
B. -6, 3, 6;
C. -6 (multiplicity 2), 3;
D. 3 (multiplicity 2), -6;
The graph of the function f (x) is a reflection of the graph of 
. Graph the function.
?
?
A. ?
B. ?
C. ?
D. ?
