For question 16, find the average rate of change for a quadratic function,
16. these tables represent a quadratic function with a vertex at (2, -1). what is
the average rate of change for the interval from x = 7 to x = 8?
interval
average rate
of change
3
8
15
2 to 3
3 to 4
4 to 5
5 to 6
vlow
6

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

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step-by-step explanation: