Pls help with these questions :( I'm running out of time 1) A state fair charges a $5.00 entry fee to attend the fair and $0.50 per ticket to ride carnival rides. Write an equation that represents the cost (y) to attend the fair when (x) amount of tickets are purchased.

2) A car tire has a radius of 18 inches. What is the area of the tire?

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

is this part of a question or something

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3