I need the different approaches Serena can use to estimate a cost function for overhead costs using direct labor-hours as the cost driver.

Sales or Cost Function Line Item Units sold Sales Actual Results 135,000 $1,350,000 Revised Budget 135,000 $1,350,000 Variance 0 $0 y = $10X $ 135,000 $5,000U Direct materials Direct labor Indirect labor $ 140,000 285,000 72,000 y=SIX y = $2x y = $6,000+ $0.50X 2. Meanwhile, Serena Williams, Controller, has gathered data on overhead costs and direct labor-hours over the past 12 months. List and discuss the different approaches Serena can use to estimate a cost function for overhead costs using direct labor-hours as the cost driver. Sales or Cost Function Line Item Units sold Sales Actual Results 135,000 $1,350,000 Revised Budget 135,000 $1,350,000 Variance 0 $0 y = $10X $ 135,000 $5,000U Direct materials Direct labor Indirect labor $ 140,000 285,000 72,000 y=SIX y = $2x y = $6,000+ $0.50X 2. Meanwhile, Serena Williams, Controller, has gathered data on overhead costs and direct labor-hours over the past 12 months. List and discuss the different approaches Serena can use to estimate a cost function for overhead costs using direct labor-hours as the cost driver