Question

Help please.

Answer 1

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
I think its the first one.

Answer 2

it's the second one

Answer 3

whatever he uses gets subtracted from his total money (70)

Answer 4

so thats why its a negative number? Oh that makes sense now...

Answer 5

yep