Evaluate the integral 
.
?
A. 
B. 
C. 
D. 
E. 
Answer: D
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Solve the problem.A car travels 400 miles on level terrain in the same amount of time it travels 160 miles on mountainous terrain. If the rate of the car is 30 miles per hour less in the mountains than on level ground, find its rate in the mountains.
A. 80 mph B. 20 mph C. 50 mph D. 40 mph
Solve.In 1985, the number of female athletes participating in Summer Olympic-Type Games was 500. In 1996, about 3550 participated in the Summer Olympics in Atlanta. Assuming that 
and that the exponential model applies, find the value of k rounded to the hundredths place, and write the function.
A. k = 0.2; P(t) = 500e0.2t B. k = 0.18; P(t) = 500e0.18t C. k = 0.18; P(t) = 500e0.28t D. k = 0.16; P(t) = 500e0.16t
Solve the problem.Find the amount of money in an account after 4 years if $3900 is deposited at 5% annual interest compounded annually.
A. $4751.77 B. $4740.47 C. $4761.49 D. $4757.57
Solve the problem.Gary can hike on level ground 3 miles an hour faster than he can on uphill terrain. Yesterday, he hiked 34 miles, spending 2 hours on level ground and 5 hours on uphill terrain. Find his average speed on level ground.
A. 7
mph
B. 7 mph
C. 4 mph
D. 4
mph