I am not sure but I think the answer is B.
She posted 2/5 of them
90 times 2/5=180/5=36
she posted 36
90-36=54
she posted 2/3 of remaining (54)
2/3 times 54=108/3=36
54-36=18
she has not yet posted 18 of them
Answer:
1/2
Step-by-step explanation:
<h3>
Answer: (x-2)(x-2)</h3>
This is the same as 
============================================
Explanation:
The middle coefficient is -4 and the last term is 4.
We need to find factors of the last term that add to the middle coefficient.
Here is a list of all ways to multiply two integers to get 4, and the sum of each pair of factors.
- -1 + (-4) = -5
- -2 + (-2) = -4
- 2 + 2 = 4
- 1 + 4 = 5
The second row of that list above is what we're after. So
-2 + (-2) = -4
-2 * (-2) = 4
Meaning the factorization is (x-2)(x-2). Note the "-2" values in each factor
We can use the FOIL rule or distribution to go from (x-2)(x-2) back to x^2-4x+4 to confirm the answer.
Answer:
Quick Market
Step-by-step explanation:
You need to set up the problem in fraction form or 3/1.05 and 5/1.15
Then you need for the numbers to have the same denominator.
After doing that the fraction would look like 114/39.9 for Quick Market and 173.48/39.9 for Stop and Save.
So Quick Market costs less.