PLZ HELP I WILL MARK AS BEAINLIEST...

-8-(-3)=?
7-(-8)=?

Step-by-step explanation:

In integer subtraction, find the additive inverse of the second number and then add.

Here additive inverse of (-3) is 3.

-8 - (-3) = -8 + 3

           = (-5)

If two numbers are opposite sign, subtract and the result will have the sign of the bigger number. Here the sign of bigger number (8) is negative.

7- (-8)

Here additive inverse of (-8) is 8

7 - (-8) = 7 + 8 = 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