Question

at an amusement park, a person spends $30 on admission and food, and then goes on r number of rides that cost $2 each

Answer 1

30 dollars would be your initial amount which would be the b part of your equation, y=mx +b. 2r would be the mx part. Your equation would read y=2r+30 and then you would plug in how many rides they went on into the r space to find y