What is the correct solution for this exercise?

3-2A Division of Mixed Costs into Variable and Fixed Components

Molly Flutie, president of First Tool, Co., has asked for information about the cost behavior of manufacturing support costs. Specifically, she wants to know how much support cost is fixed and how much is variable. The following data are the only records available:

Month Machine Hours Support Costs

May 1,700 $ 22,000 High

June 1,600 21,000

July 1,500 19,500

August 1,400 18,500

September 1,300 18,000 Low

Find cost and the variable support cost per machine hour by the high-low method.

Explain how your analysis for requirement 1 would change if new October data were received and machine hours were 1,650 and support costs were $24,000.

A least-squares regression analysis gave the following output:

Regression equation: Y = $4,050 + $10.50 X

What recommendations would you give the president based on these analyses?