Charlie bought a pair of shorts at the store when they were having a 45% off sale. if the regular price of the pair of shorts was $24,how much did charlie pay?

The correct answer is $13,20.

Step-by-step explanation:

To be able to solve this exercise we must begin by analyzing the information we have:

We know that the store had a 45% discount.

We know that the pair of shorts that Charlie bought cost $ 24.

Now we just have to find out what the amount was deducted from Charlie to determine how much he paid.

If he obtained a 45% discount over 24, we must multiply that percentage by the total amount, and then divide it by 100:

(45. 24): 100 =

1080: 100 = 10.80.

We know then that the total price was discounted $ 10.80.

Thus:

24 - 10.80 = 13.20

In this way we verify that the correct answer is 13.20.

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

where is the figure