Marlie Mount Manufactures and sells shower curtains. During the 5-months ended May 31, 2022, it incurred the following set-up costs and hours.

Month	Set-up costs	Set-up hours
January	$1,000	100
February	$1,250	200
March	$2,250	300
April	$2,500	400
May	$3,750	500

The manager of Marlie Mount is desirous of separating total set-up costs into fixed and variable costs for each of the months, and has asked you to assist.

Required:

1. Using the high-low method estimate a cost function for the set-up costs.
2. What is your best estimate of the set-up costs that is to be incurred in June if the plan is to utilize 455 set-up hours?