Answer:
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