The controller of norton industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs.

month total machine hours

january $2,860 320
february 3,160 370
march 3,760 520
april 4,660 670
may 3,360 520
june 5,830 720
a. determine the variable cost components using the high-low method. (round variable cost to 3 decimal places e. g. 12.250.)
variable cost per machine hour
$ the controller of norton industries has collected
b. determine the fixed components using the high-low method. (round answer to 0 decimal places e. g. 2,520.)
total fixed costs
$