Your friend has $100 when he goes to the fair. He spends 510 to enter the fair and $20 on food. Rides at the fair cost $2 per ride. Which function can be used to determine how much money he has left over after x rides?
Of(x) = -2x + 70
Of(x) = 2x + 70
Of(x) = -2x - 70
Of(x) = -30% + $100

77

step-by-step explanation:

  the correct choice is marked

step-by-step explanation:

the first two graphs show multiple turning points. the last graphs matches the description in every detail.

a) 7x=7

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.