Need help! I'm confused about where to go with these and how to get to my answer..

3) 37.5

4)58.5

Step-by-step explanation:

3) 15 x 5 divided by 2

4)13 x 9 divided by 2

answer: 590

step-by-step explanation:

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