Giselle pays $240 in advance on her account at the athletic club. each time she uses the club, $5 is deducted from the account. model the situation with a linear function?
b = 240 + 5x

b = 235 – 5x

b = 240 – 5x

b = 235 + 5x

Option C. is the correct option.

Step-by-step explanation:

Giselle pays $240 in advance on her account at the athletic club.

Each time she uses the club, $5 is deducted from the account.

Let x be the number Giselle used the club then amount deducted from the account will be = 5x

If b is the balance showing in her account after deduction then this situation can be modeled as

b = 240 - 5x

Therefore option C. b = 240 - 5x is the answer.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50