Simplify the expression by combining any like terms. b + 8b

9b

Step-by-step explanation: 8b+1b is the same thing as 8b+b whcih is basically 8+1 which is 9 but since it is attached to the letter b is becomes 9b.

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

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)