The answer is D because using division you would find how many cups you need to sell.
First, we want to find the GCF of 15 and 21, which is 3. Now we do 15 divided by 3 and 21 divided by 3, which gives us 5 and 7. To rewrite the expression, we take the GCF and put it on the outside of the parenthesis. Inside the parenthesis, we put 5 + 7. So it'll look like this:
3(5 + 7)
5(a + 3b) = 5(9 + 3(2)) = 5(9 + 6) = 5(15) = 75
The correct answer is about two hours. Hope this helps.
They will need to be it on day 250 because 500/2=250
Hope this helps
Have a happy holidays
