The Frederick county fair cost $15.00 to get in and $2.50 per ride, while the Montgomery county fair cost $10.00 to get in and $3.00 per ride. Which equations could be used to determine how many rides you would need to on for both fairs to be of equal value?

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

maya’s expression will generate the wrong sum because she violated the commutative property.

step-by-step explanation: