The graph of a quadratic function is shown on the grid.

Which function is best represented by this group?

f(x)=-x2+3x+4

f(x)=x2+3x -4

f(x)= x2-3x-4

f(x)=-x2-3x+4

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

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step-by-step explanation: