1. What is the variable maintenance cost per machine hour? 2. What is the fixed cost of maintenance each month? 3. What is the mixed cost formula for the company's maintenance cost? 4. If Lexington uses 4800 machine hours in a month, what will its total maintenance cost be for that month?

Lexington Pharmaceuticals, Inc. was incorporated in the province of British Columbia on October 28, 2011. After gathering manufacturing-related costs over a period of several years, the company determined that machine hours were the best predictor of the company's maintenance costs. Allison Forsythe, the company's Chief Financial Officer, is studying the following report relating to the company's maintenance costs and machine hours usage for the twelve months of the preceding year: Month Machine Hours Total Cost January 4,500 $34,645 February 5,400 $40,612 March 6,400 $47,242 April 5,200 $39,286 May 4,300 $33,319 June 4,400 $33,982 July 6,800 $49,894 August 4,200 $32,656 September 7,600 $55,198 October 6,200 $45,916 November 5,900 $43,927 December 6,300 $46,579