Question

Corinne has a job selling magazines. She earns $7.50 per hour plus 20% of the total amount of her sales. She also gets an allowance of $40 per week for gas. She knows her weekly earnings can be shown using the following expression: 7.50h + 0.20s + 40 Part A: Identify a coefficient, a variable, and a constant in this expression. (3 points) Part B: If Corinne works for 25 hours and sells $300 in magazines, how much does she earn for the week? Show your work to receive full credit. (4 points) Part C: If Corinne gets a raise and begins earning $9 per hour, would the coefficient, variable, or constant in the equation change? Why? (3 points)

Answer 1

Part A:  Coefficient:  either 7.50 or 0.20
Part B:

7.50 (25) + 0.20 (300) + 40
187.50 + 60 + 40 = $287.50

Part C: After her raise, the first term will change from 7.50h to 9h