# Giselle pays $240 in advance on her account at the athletic club. Each time she uses the club ,5$ is deducted from the account. How do you model the situation with a linear function?

Let $x =$ number of times Giselle uses the club
f(x)=$240-5x For example, if Giselle uses the club 8 times ... f(8)=$240-(5xx8)=\$200