SOLUTION: Please help me solve this equation: You give a salesperson $20.00 for a purchase and recieve change. Use the function to find the amount of change from a $ 5.00 purchase.

Question 173785: Please help me solve this equation: You give a salesperson $20.00 for a purchase and recieve change. Use the function to find the amount of change from a $ 5.00 purchase.
Answer by Mathtut(3670) (Show Source): You can put this solution on YOUR website!
let C=change and let x be the amount of purchase
:
C=-x+20
:
in our case x=5.00--->
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