Simplify

12 + pi - 1/2(2.25pi)

and give your answer in exact form (e. g. 20pi + 12).

12-π/8

Step-by-step explanation:

12+π-1/2×2.25π

12+π-1/2×9/4π

12+pi-9π/8

12-π/8

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