Please help me. It’s from my math class

1-72: Estimate- 15 weeks

        Actual- $125/$7.75= 16.13 weeks.

1-73: 3 feet long=36 inch board

        6 feet long=72 inch board

        12 feet long = 144 inch board

1-74: a. 100, 50, 60, 40, 20, 0

        b. 75, 60, 45, 30, 15, 0

        c. 125, 100, 75, 50, 25, 0

        d. 250, 200, 150, 100, 0

the dimensions are:

step-by-step explanation:

we want to find the dimensions of a rectangular box with volume of

we factor to obtain;

we rewrite the rightmost factor to obtain;

recall that:

we apply difference of two squares formula to obtain;

hence the dimensions are