Gracelia wants to find the best deal on a new video game
system. Walmart has the game
system for $229 plus 20% off.
Target has the game system for
40% off of $299. Best Buy is
selling the game system for
$279 with a $50 instant rebate.
Which store has the best deal?

walmart has the best deal

Step-by-step explanation:

best buy- 129 dollars

target- 119 dollars

walmart- 45.8 dollars

hope this helped :)

good for u

step-by-step explanation:

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