It says find the value I’m having a hard tome understanding

The triangle is equilateral because each edge and angle are congruent, which is denoted by the ticks on each edge and the arcs on each angle.

So

4xº = 60º   →   x = 15

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