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 the second week he has \(\$ 105 ,\) and so on. Which equation represents the cash balance on his card after \(t\) weeks?
\(y = 175 + 35 t\)
\(y = - 35 t + 175\)
\(y = 245 - 35 t\)
\(y = - 35 t + 140\)