Write as a percent. Round the percent to the nearest tenth if necessary.
A. 1.7%
B. 60%
C. 16.7%
D. 27.8%
Answer: C
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Sketch the surface z = f(x,y).f(x, y) = x2
A. 
B. 
C. 
D. 
Solve the problem.The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke0.05t where k is a constant and t is the time in years. If the current population is 32,000, in how many years is the population expected to be 80,000? Round to the nearest year.
A. 10 yr B. 18 yr C. 8 yr D. 119 yr
Use percents, percent equations, and/or percent proportions to solve the application.A community college raises its tuition from $330 per course to 
per course. What is the percent increase? Round to the nearest tenth of a percent, if necessary.
A.
| 93.3% |
B.
| 6.3% |
C. 6.7%
D.
| 93.7% |
Find the root if it is a real number.- 
A. 3 B. 9 C. -27 D. -3