Answer:
Part 1
The electricity cost, which varies in relation to machine hours is $0.50
Part 2
The Cost function will be :
$300 + $0.50 X
Step-by-step explanation:
High-low method is used to separate the variable and fixed cost element of a mixed cost or semi variable expense.
Step 1 : Determine the variable cost
Variable Cost = ($750 - $500) ÷ (900 - 400)
= $0.50
Step 2 : Determine the fixed cost
Total Cost = Variable Cost + Fixed Cost
hence,
Fixed Cost = Total Cost - Variable Cost
using the high point to substitute in the formulae we get :
Fixed Cost = $750 - ($0.50 x 900)
= $300
thus,
Total Cost = $300 + $0.50 x