Let g be the number of gallons of gasoline that remain in a car's gasoline tank after the car has been driven d miles since the tank was filled. Some pairs of values of d and g are shown in the following table.

d (miles)	g (gallons)
30	11
60	9
90	7
120	5
150	3
180	1

Estimate how much gasoline is in the tank after the driver has gone 45 miles since last filling up.

Estimate the number of miles driven since the tank was last filled if 4 gallons of gasoline remain in the tank. Find the d-intercept of the model. What does it mean in this situation?

Find the g-intercept of the model. What does it mean in this situation?