Solve.A boat moves 28 km/h in still water. It travels 80 km upstream and 80 km downstream in a total time of 7 hours. What is the speed of the current?
A. 8 km/h
B. 12 km/h
C. 10 km/h
D. 9 km/h
Answer: B
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The following problem involves adjustable-rate mortgage. You the given table if necessary.
Suppose your mortgage is $55,400 for 25 years. The index rate is 1.5% and the margin is 2.5%. Find the initial monthly payment.
A. $292.42 B. $313.42 C. $385.50 D. None of the above is correct.
Evaluate the algebraic expression for the given value(s) of the variable(s).7xy ; x = -4, y = -1
A. 28 B. -28y C. -28 D. 27
Solve the problem.A strawberry patch is 1.2 dam long and 1.6 dam wide. If one person can pick 4 m2 of strawberries in an hour, then how many hours will it take for one person to harvest the entire patch?
A. 4.8 hr B. 0.5 hr C. 4800 hr D. 48 hr
Evaluate.Find f(k - 1) when f(x) = 4x2 + 2x + 4.
A. 4k2 - 6k + 10 B. 4k2 + 18k + 10 C. 4k2 - 6k + 6 D. -6k2 + 4k + 6