Question

Your friend has $100 when he goes to the fair. He spends $10 to enter the fair and $20 on food. Rides at the fair cost $2.00 per ride. Which function can be used to determine how much money he has left over after x rides?

Answer 1

hmm

Answer 2

(100-30) - 2x= answer

Answer 3

how

Answer 4

f(x) = -30x + $100 ?

Answer 5

because first he starts with $100 and then 20 + 10 = 30 so then 100-30 equal 70 and then they did not say how many rides he went so it it is x times $2.00

Answer 6

so the equation is 70-2.00x= answer

Answer 7

wouldnt the 2x be negative

Answer 8

no

Answer 9

f(x) = -2x + 70 this is the correct answer but thanks.

Answer 10

oh ok