If 5x+8=10 for some value of x, then what is the value of 10x+16 for the same value of x?

20

Step-by-step explanation:

5x+8=10 leads to 10x + 16 = 20 if each term is multiplied by 2.  This result shows us that 10x + 16 = 20 (answer)

15

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