Giselle pays $210 in advance on her account at the athletic club. Each time she uses the club, $15 is deducted from the account. Model the situation with a linear function.
b = 195 – 15x
b = 195 + 15x
b = 210 + 15x
b = 210 – 15x
b = 210 - 15x
In this model, b represents the balance on Giselle's account at the athletic club, and x represents the number of times she uses the club.
At the beginning, Giselle pays $210 in advance, so that is her initial balance. Each time she uses the club, $15 is deducted from her account balance.
Therefore, the linear function b = 210 - 15x represents this situation.