Solve the problem.A boat moves 6 kilometers upstream in the same amount of time it moves 20 kilometers downstream. If the rate of the current is 5 kilometers per hour, find the rate of the boat in still water.
A. 2
kilometers per hour
B. 5 kilometers per hour
C. 9
kilometers per hour
D. 8
kilometers per hour
Answer: C
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The graph below shows the percentage of students enrolled in the College of Engineering at State University. Use the graph to answer the question.
Between what two years is the difference in function values equal to 5%?
A. between 1970 and 1975 B. between 1985 and 1990 C. between 1960 and 1965 D. between 1980 and 1985
Factor by grouping.4y6 - y5 - 4y + 1
A. (y5 - 1)(4y - 1) B. (y5 - 1)(4y + 1) C. (y5 + 1)(4y - 1) D. (y5 + 1)(4y + 1)
The estimated monthly sales of Mona Lisa paint-by-number sets is given by the formula
?
?
where q is the demand in monthly sales and p is the retail price in yen. At what price will revenue be a maximum? Round the answer to the nearest hundredth.
?
A. 66.99 yen B. 0.56 yen C. 0.78 yen D. 0.99 yen E. 1.22 yen
Divide. Simplify the answer.
A. 
B. 
C. 10
D. 2