Solve the problem.Peter must practice the piano 14
hours per week. He has already practiced 7
hours. How many more hours does he need to practice?
A. 5
hours
B. 6 hours
C. 6
hours
D. 7
hours
Answer: C
Mathematics
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Find the derivative of the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Use estimation to determine which calculation is incorrect.
A. 
B. 
C. 
D. 
Mathematics
Simplify.- 
A. -25
B. 13
C. 5
D. -5
Mathematics
Find the indicated rate.A person ran 450 meters in 2.25 minutes. What was her rate in meters per minute?
A. 912.5 meters/min
B.
| 200 meters/min |
C. 450 meters/min
D. 210 meters/min
Mathematics