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,

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,

mathstudent55 · Answer

A variable is a letter. Very often we use x and y as variables, but any other letter can also used as a variable.
A coefficient is a number that multiplies a variable.
A number by itself in a term is called a constant.

Look at 7.50h + 0.20s + 40

Can you name two variables?

anonymous · Answer

No