Answer:
1 mile/hour is equivalent to 1.47 feet/seconds
Step-by-step explanation:
Given

Required
Determine the equivalent of 1 mile/hour

Express 60 as 60 * 1

Divide both sides by 60


Reorder

Divide 88 by 60

Approximate to 3 significant figures

Hence;
1 mile/hour is equivalent to 1.47 feet/seconds
Answer:
y = x^2 (x - 2) = x^3 - 2 x^2
dy/dx = 3 x^2 - 4 x
At x = 3 dy/dx = 3 * 9 - 4 * 3 = 15 The slope (gradient) of the curve

It looks like your first selection (a) is appropriate.
Multiply straight across
5/1 * 3/4 = 15/4
now change it into a mixed number
3 3/4
52m^2= 2[(x-5)+(x)]. 52m^2= 2(2x-5). 52m^2=4x-10