Answer:
y=3x+10
Explanation:
The formula for an equation in slope-intercept is y=mx+b. m is the slope and b is the y-intercept
The 3 is the slope because it says that you have to pay that amount per game so that is the rate. 10 is the y-int because it says that you have to pay a one-time fee and a y-intercept is just once and isn't a rate.