Assume that a company provided the following cost formulas for three of its expenses where a refers to the number of hours worked): Rent (fixed) Supplies (variable) Utilities (mixed $3.000 $4.000 $150 + $0.75g The company's planned level of activity was 2,000 hours and its actual level of activity was 1,900 hours. How much utilities expense would be included in the flexible budget? Multiple Choice $1575 o o $1.500 $1675 $1650