Solve the problem.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the average number of hours Bill spent exercising per week. Round your answer to two decimal places. 
A. 8.70
B. 8.22
C. 7.78
D. 8.45
Answer: B
Mathematics
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Solve the problem.Set up the triple integral for the volume of the sphere 
in spherical coordinates.
A. 
B. 
C. 
D. 
Mathematics
Determine whether the relation is a function.
A. Function B. Not a function
Mathematics
Identify the opposite of the number. 10
A. 0
B. -10
C. 
D. 10
Mathematics
If a woman making $37,000 a year receives a cost-of-living increase of 2.2%, how much is her raise?$__________
Fill in the blank(s) with the appropriate word(s).
Mathematics