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.

Algebra ->  Linear-equations -> 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.      Log On


   

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) About Me  (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--->highlight%28C=-5%2B20=15%29