Jennifer belongs to a gym that requires a monthly membership fee of $100 plus an additional $10 fee for each yoga class she attends. Which of the following slope-intercept form equations models the total amount that Jennifer pays monthly?

A.
y = –100x + 10
B.
y = 100x + 10
C.
y = –10x – 100
D.
y = 10x + 100

Question

Jennifer belongs to a gym that requires a monthly membership fee of $100 plus an additional $10 fee for each yoga class she attends. Which of the following slope-intercept form equations models the total amount that Jennifer pays monthly?


A.
y = –100x + 10
B.
y = 100x + 10
C.
y = –10x – 100
D.
y = 10x + 100

anonymous · Answer

fixed monthly fee
price per class

which one of them is dependent on x=classes she takes?

anonymous · Answer

I'm not to sure.

anonymous · Answer

the fixed monthly fee is not dependent on the classes she takes. she can never even go there once, it will still be the same monthly fee.

anonymous · Answer

Alright, i'm pretty confused, lol.

anonymous · Answer

the monthly fee doesn't care how many lessons she takes. to be a member it is a fixed price. she can go to the gym every day and the monthly fee will not increase.

anonymous · Answer

So it'd be C then?

anonymous · Answer

It's D.
Because the total of how much monthly depends on how many yoga classes she takes. Let say she took 2 in December. It would be shown like this
10(2) + 100 = $120

highschoolmom2010 · Answer

@VinnieST  try D 100 a month and 10x (x =times she went )

luigi0210 · Answer

At least you gave an explanation c:

anonymous · Answer

yes, from her bank account's perspective, it would be C. however they said the function gives what she pays. if she pays money to them, it would be positive then.

anonymous · Answer

Thanks a lot! I've given you a medal.