Naomi filled up her car with gas before embarking on a road trip across the country. Let GG represent the number of gallons of gas remaining in her gas tank after driving for tt hours. A graph of G is shown below. Write an equation for G then state the x-intercept of the graph and determine its interpretation in the context of the problem.

G=___________
The x-intercept of the function is____ which represents
a.)the number of gallons of gas used per hour driven
b.)the number of gallons of gas used per mile
c.)the initial amount of gas in the tank
d.)the number of hours driven until the tank is empty