At an activity level of 7,900 machine-hours in a month, Manchester Corporation's total variable maintenance cost is $430,550 and its total fixed maintenance cost is $417,120.
What would be the total variable maintenance cost at an activity level of 8,000 machine-hours in a month? Assume that this level of activity is within the relevant range.
a. $847,670
b. $422,400
c. $430,550
d. $436,000