Help me please!
f(x) = 2x^2 + 4x - 5
g(x) = 6x^3 - 2^x2 + 3
find ( f + g)(x)

6x³ + 4x - 2

Step-by-step explanation:

note that (f + g)(x) = f(x) + g(x) , so

f(x) + g(x)

= 2x² + 4x - 5 + 6x³ - 2x² + 3 ← collect like terms

= 6x³ + 4x - 2

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