Find the mean.Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below. Find the mean number of hours Bill spent exercising per week. Round to the nearest hundredth.7.90 8.10 7.00 8.40 8.30 7.908.10 7.00 7.80 7.90 8.40 8.706.70 8.10 8.10 8.80 8.30 8.10
A. 7.56
B. 8.45
C. 7.98
D. 8.21
Answer: C
Mathematics
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Graph the function.f(x) = log5x 
A. 
B. 
C. 
D. 
Mathematics
Use both properties of equality to solve the equation.8c + 1 = -89 - 10c
A. -5 B. -6 C. -4 D. 5
Mathematics
Solve the problem.Consider the following simplified digital photograph that has a 3 × 3 grid with four gray levels numbered from 0 to 3. It shows a letter Y in black on a light gray background.
Let A be the 3 × 3 matrix that represents this figure digitally. Find the matrix which represents the entire picture becoming one shade lighter.
A. 
B. 
C. 
D. 
Mathematics
Add or subtract. Simplify the answer.
- 
A. 11
B. 
C. 
D. 
Mathematics