1. There is a sale at the store for 20% off all
t-shirts. What percent of the normal price are
t-shirts?
7.EE 2
2.
A six-inch border of stones is being added to
a rectangular flower bed with side lengths 2s
and s + 1. Write an expression to represent the
perimeter of the new border.
3. Allie and Nina went to see the orchestra. Nina
bought a copy of the orchestra's recording of a
Tchaikovsky symphony for S15. Write an
expression to represent the amount they spent
Together using to represent the cost of an

no one knows lol

step-by-step explanation:

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