The perimeter of a rectangle is 54 feet. The width is 1 less than the length. What are the dimensions of the rectangle?

Step-by-step explanation:

length=x

width=x-1

x + x + (x-1) + (x-1) = 54

4x - 2 = 54

4x = 56

x = 14 ft

x = 14 ft

x - 1 = 14 - 1 = 13 ft

x = 14 ft

x - 1 = 14 - 1 = 13 ft

Perimeter= x + x + (x-1) + (x-1)

54 ft = 14 + 14 + (14 - 1) + (14 - 1)

54 ft = 28 + (13 +13)

54 ft = 54 ft

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50