The price in dollars, P, that Eric pays for gas varies directly with the number of gallons, g, he buys. It costs him $30 to buy 20 gallons of gas. Write the equation that relates P and g.

We can solve it with 'direct proportion' because every ticket is costs same dollars and 810.75 dollars are the sum of 15 floor seat tickets.

Dollar(s) =Ticket(s)
810.75 = 15
x = 1

Multiple numbers with it's cross.
15x= 810.75
x= 810.75/15
x= 54.05

Hope it helps!
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