Answer:
A. You need 2 quarters and no nickels to park for 60 minutes.
Explanation:
The x-intercept is the value of x when y = 0.
So we have
30x + 6(0) = 60
30x = 60
x = 2.
x represents the number of quarters spent and y the number of nickels.
At the x intercept you have spent 2 quarters and no nickels.