Which equation has solutions of 6 and -6

I don't see any answers provided so, i'm going to add, subtract, multiply, and divide with 6 and -6.

6 + -6 = 0 | Another solution: Any number multiplied by 0

6 - (-6) = 12 | Another Solution: 6 + 6

6 · -6 = -36 | Another Solution: -6 squared

6 / -6 = -1 | Another Solution: -1 x 1

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