same numbers different question

Question 8: Cardinal Cleaners documented the gallons of cleaning solvent it used as well as total overhead costs for the past five months as follows: Number of gallons Total overhead costs Duly 160 $6,500 August 150 6,100 September 155 6,700 October 175 7,000 November 170 6,800 Using the high/low method, what is the Fixed cost? Select one: O a. $700.00 O b. $650.00 O c. $500.00 O d. $900.00 Cardinal uses the high/low method to predict total overhead costs. If Cardinal anticipates using 200 gallons of solvent in December, what are expected total overhead costs? Select one: O a. $7,900 O b. $8,000 O c. $8,500 O d. $9,700