Question

david is rowing a boat upstream the river is flowing at a speed of 2 miles per hour, david starts rowing at a speed of 6 miles per hour, and his speed decreases at a rate of 1.5 miles per hour. the equation (blank) gives the speed of the boat after david has rowed for x hours.
A. y=4+1.5x B. y=4-1.5x

Answer 1

Think of x as hours

Answer 2

"and his speed *decreases* at a rate of 1.5 miles per hour"

Answer 3

Which equation is decreasing?