The accountant for Bonny's Hats knows that its electric bills are partly variable, but mostly fixed. The accountant has put together the following data from the past 6 months comparing machine hours used to total electric cost for the month. Machine Hours Electric Bill January 100 $1,000 February 145 $1,225 March 94 $990 April 120 $1,130 May 90 90 $960 June 130 $1,150 Using the high-low method, calculate the total monthly fixed cost.