What is h(x) = –3x2 – 6x + 5 written in vertex form? h(x) = –3(x + 1)2 + 2 h(x) = –3(x + 1)2 + 8 h(x) = –3(x – 3)2 – 4 h(x) = –3(x – 3)2 + 32

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

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.