The height of an object t seconds after it is thrown from a height of h feet is modelled by the equation h(t) = –16t2 + vt + h. If the ball is thrown from a point 6 feet above ground with an initial velocity, v, of 30 feet per second, how long will it take for the ball to hit the ground?

v is the initial upward velocity …

… initial upward velocity is 384 …

Taken together, these two statements tell you v=384

What do you see about symbol h?

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