Write an algebraic equation and use it to solve the problem.A hot air balloon spent several minutes ascending. It then stayed at a level altitude for three times as long as it had ascended. It took 5 minutes less to descend than it did to ascend. The entire trip took one hour and 20 minutes. For how long was the balloon at a level altitude?
A. 17 minutes
B. 29 minutes
C. 12 minutes
D. 51 minutes
Answer: D
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Find 
.y = (ln 5x)?
A. 
(ln 5x)?-1
B. ?(ln 5x)?-1
C. 
(ln 5x)?-1
D. (5x)? ln ?
Solve.Dave's movie collection, consisting of VHS tapes and DVDs, are arranged on a storage shelf that is 36 inches in length. The VHS tapes are 1.25 inches thick, and the DVDs have a thickness of 0.5 inch. If 51 of his movies exactly fit on the storage shelf, how many of the movies are DVDs?
A. 37 DVDs B. 24 DVDs C. 14 DVDs D. 34 DVDs
Solve the problem.Use the given area to find the dimensions of the quadrilateral.
A. base = 1, height = 7 B. base = 17, height = 23 C. base = 23, height = 17 D. base = 3, height = 3
Find the volume of the solid of revolution formed by rotating about the x-axis the region bounded by the curves.y = 
, y = 0, x = 1, x = 6 Give your answer in exact form.
A. 
?
B. 
?
C. 
? ln 6
D. ? ln 6