County fair admission costs $5. Each game ticket costs $2. Arianna has $21 to spend at the fair. She writes the inequality 5 + 29 = 21 to represent how many
game tickets, g, she can purchase at the fair. Which values in the set (3,8, 10, 13)
are solutions of the inequality? Show your work,

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

step-by-step explanation:

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3 is greater then both of those numbers