Answer:
The cost function is:
Mixed cost = 3.75x + 1375
Step-by-step explanation:
A mixed cost is a cost that contains an element of both the fixed and the variable cost in it. The variable element per unit in a mixed cost can be calculated using the high low method. The formula for variable cost per unit under the high low method is,
Variable cost per unit = ( Cost at highest activity level - Cost at lowest activity level) / ( units of highest activity level - units of lowest activity level)
The units of activity level here are hours. The highest activity level here is 10300 hours and the lowest activity level here is 5500 hours.
The variable cost per hour = (40000 - 22000) / (10300 - 5500)
Variable cost per hour = $3.75
The total fixed cost in this mixed cost = 22000 - (3.75 * 5500) = $1375
Thus the cost function is = 3.75x + 1375
Where x is the number of hours