Question

Rodolpho uses a prepaid gas card to spend $35 each week for gas. After the first week, he has $140 left on the card. After everything he second week he has $105, and so on. Which equation represents the cash balance on his card after t weeks?

answers:
y= -35t + 140
y= -35t + 175
y= 245 - 35t
y= 175+ 35t​

Answer 1

I got this T_T y=175-35t

But maybe its y= -35t + 175 since its negative :)