1. Suppose y is jointly proportional to x and z. What is y when x = 2 and z= 3, if y= 20 when x = 4 and z= 3?

2. Y varies directly as x and inversely as the square of z, and when x=32, y=6 and z=4. Find x when y=10 and z=3.

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? *

What adds to be the bottom number but also multiplies to be the top number with 8 on the bottom and 15 on top

Which expression is a perfect cube? a. x8 b. y24 c. m28 d. x64