Cover-to-Cover Company is a manufacturer of shelving for books. The company has compiled the following cost data, and wants your help in determining the cost behavior. After reviewing the data, complete requirements (1) and (2) below.

Units	Total	Total	Total Machine
Produced	Lumber Cost	Utilities Cost	Depreciation Cost
7,000 shelves	$84,000	$9,050	$125,000
14,000 shelves	$168,000	$17,100	$125,000
28,000 shelves	$336,000	$33,200	$125,000
35,000 shelves	$420,000	$41,250	$125,000

Requirements:

1. Determine whether the costs in the table are variable, fixed, mixed, or none of these.

2. For each cost, determine the fixed portion of the cost, and the per-unit variable cost. If there is no amount or an amount is zero, enter "0". Recall that, for N= Number of Units Produced, Total Costs = (Variable Cost Per Unit x N) + Fixed Cost. Complete the table below with your answers.