Darnell's car used 8 gallons of gasoline to travel340 miles after a mechanic worked on the car it used 7 gallons to travel 350 miles if the price of gasoline was approximately 4.00 dollars per galloon how much less to the neares cent per mile did it cost to run the car after the mechanic worked on it

x + 4/7

step-by-step explanation:

use cymath

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is