The temperature changed by -4 degrees Fahrenheit per hour how much did the temperature change in 7 hours

-28 degrees Fahrenheit

Step-by-step explanation:

Since it changed -4 every hour for 7 hours, you would do -4 x 7 to get the answer, which equals -28. So your answer is -28 degrees Fahrenheit if I'm not mistaken.

Hope this helped :)

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