The poetry club had its first bake sale and they made 79.35 dollars. The club members are planning to have 4 more bake sales. Leslie said if we make the same amount at each bake sale we will earn 3,976.50 dollars. Peggy said no way we will earn 396.75 after bake sales. Use estimation to help Peggy explain why Leslie reasoning is incorrect.

Peggy is correct, their total bakes sale = $396.75

Step-by-step explanation:

Using estimation to help Peggy explain why Leslie reasoning is incorrect.

From the question we can see that:

First bake sale they made = $79.35

4 more bake sales making the same amount = 4 × $79.35

The total amount they would make from the bake sales =

$79.35 + (4 × $79.35)

= $396.75

Peggy was right. Leslie's reasoning was incorrect.

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.