Solve the problem.A boat heads upstream a distance of 30 miles on the Mississippi river, whose current is running at 5 miles per hour. If the trip back takes an hour less, what was the speed of the boat in still water? Give the answer rounded to two decimal places, if necessary.
A. 16.58 mph
B. 15 mph
C. 18.03 mph
D. 6 mph
Answer: C
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Find the relative extrema of the function and classify each as a maximum or minimum.f(x) = 
A. Relative maximum: (0, 0)
B. Relative minimum: 
, relative maximum: 
C. Relative minimum: (0, 0)
D. Relative minimum: (1, 0), relative maximum: (-1, 0)
Solve the problem. Round to the nearest cent.Find the future value of $8000 invested over 19 years in an account with an APR of 1% compounded annually.
A. $9440.00 B. $9664.87 C. $9569.18 D. $9520.00
Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.csc 29°
A. 2.06 B. -1.43 C. -1.51 D. 1.98
Express the distance between the given numbers using absolute value. Then find the distance by evaluating the absolute value expression.3.3 and 21.6
A. |3.3 - 21.6| = 18.3 B. |21.6 - 3.3| = -18.3 C. |-3.3 + 21.6| = -24.9 D. |3.3 + 21.6| = 24.9