Tempe Office Services and Supplies (TOSS) provides various products and services in the Tempe Research Park, home to numerous high-tech and bio-tech companies. Making color copies is one of its most popular and profitable services. The controller performed a regression analysis of data from the Color Copy Department with the following results:

Intercept	561.22689
R square	0.966478
Number of observations	6
X coefficient	0.05852

The regression output was based on the following data:

Month	Number of Color Copies		Color Copy Department Costs
July	24,350		$	1,935
August	17,200			1,550
September	24,950			2,015
October	23,400			1,975
November	21,550			1,855
December	18,550			1,645

Required:

1. What is the variable cost per color copy for TOSS?

2. What is the fixed cost for the Color Copy Department?

3. Based on the regression output obtained by the controller, what cost formula should be used to estimate future total costs for the Color Copy Department? Enter answer as an equation in the form of y = a + bx.

5-a. Use the high-low method to estimate the variable and fixed costs for the Color Copy Department.

5-b. What cost formula should be used based on your analysis? Enter answer as an equation in the form of y = a + bx.

6. If 21,900 copies are made during January, what is the total cost predicted by each method?