POSSIBLE POINTS. 7 Two clothing stores are having a sale on all their dress shirts. Store A is charging $15 for each dress shirt. Store B is $18 for each shirt but giving customers a coupon for a $9 discount when they check out. Which of the following statements are true? There can be more than one correct answer.

The statements are not provided, so i will answer in a general way.

Let's define the variable x as the number of dress shirts brought for some person.

In store A, each one costs $15.

Then the cost of x dress shirts will be:

A(x) = $15*x.

In store B, each one costs $18, but there is a coupon of $9, then we can write the cost in store B as:

B(x) = $18*x - $9.

Now we can find wich store will be cheaper for a given number x, by calculating the difference between A(x) and B(x).

D = A(x) - B(x)

If D is positive, means that B(x) is cheaper.

If D is negative, means that A(x) is cheaper.

If D is equal to zero, means that the cost is the same in both stores.

D = A(x) - B(x) = $15*x - $18*x + $9 = (-$3*x) + $9.

First, let's find for what value of x we have the same cost in both stores:

0 = (-$3*x) + $9.

$9/$3 = 3 = x.

Then for 3 dress shirts, the cost will be the same in each store.

Now, as the coefficient that multiplies x is negative, if we have x > 3, then D will be negative, and if x < 3, D will be positive.

then:

For x = 3, the cost is the same in both stores.

for x > 3, Store A is cheaper.

For x < 2, Store B is cheaper.

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

addition

step-by-step explanation: