In a rectangle, the ratio of the width to the length is 4:5. If the rectangle is 40 centimeters long, find its width.
A. 32 cm.
B. 36 cm.
C. 44 cm.
D. 50 cm.

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches. approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

Simplify this expression. 8x 16(x + y)