A local bank has a debit card that gives a $3 reward each month you use your card for $50 or more in purchases.
1. Write an equation relating rewards earned, y, to total monthly purchases, x. Give the domain of this function.

A local credit union has a debit card that rewards 3% of your total monthly purchases.

2. Write an equation relating rewards earned, y, to total monthly purchases, x. Give the domain of this function.
3. Graph the equations from both 1 and 2. (use a scale of 25 for the x-axis.)

Question

A local bank has a debit card that gives a $3 reward each month you use your card for $50 or more in purchases.
1. Write an equation relating rewards earned, y, to total monthly purchases, x. Give the domain of this function.

A local credit union has a debit card that rewards 3% of your total monthly purchases. 

2. Write an equation relating rewards earned, y, to total monthly purchases, x. Give the domain of this function.
3. Graph the equations from both 1 and 2. (use a scale of 25 for the x-axis.)