Find an equation of the line that passes through the point and has the indicated slope.

Step-by-step explanation:

y = mx+c

y = 5/4x+c

-2=5/4(5) +c

-2 = 25/4 + c

-8/4 - 25/4 = c

-33/4 = c

therefore equation of that line is y =5/4x -33/4

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you