Question

Janet bought g number of packs of gum. Each pack of

gum costs $0.79. Write an expression that shows how
much change she will get back from paying with a $20
bill.
USE g FOR THE VARIABLE

Answer 1

f(g)=20-0.79*(g)

Explanation:

The change will receive depends on the money given subtract to the variable multiply by the price per gum package.