The boat swim y miles downstream in 5 hours. The speed of the boat in still water is 24 mph. Write the a linear equation that represent how distance depends from the speed of stream x .
A) y = 5 x + 120
B) y = 5 x + 24
C) y = 120 x + 5
D) y = 24 x + 120

Question

Quizplus · Accepted Answer

The speed of the boat downstream is the sum of its speed in still water and the speed of the stream, which is $24 + x$ mph. Since the boat travels for 5 hours, the distance $y$ is given by $y = 5(24 + x) = 5x + 120$.

The Boat Swim Y Miles Downstream in 5 Hours