Question

Giselle pays $210 in advance on her account at the athletic club.Ech time she uses the club,$15 is deducted from the account.Model the situation with a linear function.

A.b = 210 + 15x
B.b = 210 – 15x
C.b = 195 + 15x
D.b = 195 – 15x

Answer 1

B is correct. Your starting amount is 210$ And you're taking away 15$ each time she uses the club,x.

Answer 2

The linear function model the situation is b = 210 - 15x .

Option (B) is correct .

Explanation:

Let us assume that the number of times giselle uses the club be x .

As given

giselle pays $210 in advance on her account at the athletic club.

Each time she uses the club,$15 is deducted from the account.

Let suppose that the money left after giselle uses the club x times is b .

Than the equation becomes

Money left = Amount pay in advance - Deducted amount × Number of times giselle uses the club .

Put all the values in the above

b = 210 - 15 × x

b = 210 - 15x

Therefore the linear function model the situation is b = 210 - 15x .

Option (B) is correct .