Lumber Costs Lumber that is used to frame walls of houses is frequently sold in multiples of 2…
Lumber Costs Lumber that is used to frame walls of houses is frequently sold in multiples of 2 ft. If the length of a board is not exactly a multiple of 2 ft, there is often no charge for the additional length. For example, if a board measures at least 8 ft, but less than 10 ft, then the consumer is charged for only 8 ft.
(a) Suppose that the cost of lumber is $0.80 every 2 ft. Find a formula for a function ƒ that computes the cost of a board x feet long for
(b) Determine the costs of boards with lengths of 8.5 ft and 15.2 ft.