Find the inverse using composition.f(x) = x4 + 4, x ? 0
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. Not invertible
Answer: C
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Simplify the expression.8(3) - 27 ÷ 9
A. 21
B. 0
C. - 
D. 27
Solve the problem. Round your answer to the nearest tenth, when appropriate.The position of an object moving in a straight line is given by s(t) = t2 - 8t, where s is in feet and t is the time in seconds the object has been in motion. How long will it take the object to move 
?
A. 9.7 sec B. 12.8 sec C. 17.0 sec D. 9.5 sec
Rationalize the denominator. If any variables are present, assume that they represent nonnegative numbers, and assume that the denominator is not zero.
A. 
B. 
C. 
D. 
Solve the problem.Tom Quig traveled 260 miles east of St. Louis. For most of the trip he averaged 60 mph, but for one period of time he was slowed to 20 mph due to a major accident. If the total time of travel was 7 hours, how many miles did he drive at the reduced speed?
A. 100 miles B. 90 miles C. 80 miles D. 75 miles