two problems i am struggling with.

Problem 3 Werner Brothers, Inc., used the high-low method to derive its cost formula for electrical power cost. According to the cost formula, the variable cost per unit of activity is $2 per machine-hour. Total electrical power cost at the high level of activity was $9,400 and at the low level of activity was $9,000. If the high level of activity was 2,200 machine hours, then what is the machine hours at the low level of activity? Problem 4: Electrical costs at one of Kantola Corporation's factories are listed below: February March April May Machine Hours 3,570 3,580 3,553 3,627 3,625 3,565 3,548 Electrical Cost $36,405 $36,493 $36,302 $36,833 $36,800 $36,366 $36,237 $36,213 $36,577 June July August September October 3,542 3,593 Management believes that electrical cost is a mixed cost that depends on machine-hours. Use the high- low method to estimate the variable and fixed components of this cost. Compute the variable component first, rounding off to the nearest whole cent. Then compute the fixed component, rounding off to the nearest whole dollar