Question

Your friend has $90 when he goes to the fair. He spends $5 to enter the fair and $15 on food. Rides at the fair cost $1.50 per ride. Which function can be used to determine how much money he has left over after x rides?

f(x) = 1.5x + 70
f(x) = −1.5x + 70
f(x) = −1.5x − 70
f(x) = −20x + $90

Answer 1

in the end he's left with nothing so the answer's B) Step-by-step explanation:

I had this on a quiz lol

Answer 2

F(x)+-1.5x+70 because you have 70 so it is positive and u lose money for rides which is negative