Answer:
65
Step-by-step explanation:
it is the largest cup so it is 65
Yes 28/30 is bigger than 4/5.
Answer:
You have to buy more than 20 books to make Cool Cover Bookstore club a better deal.
Step-by-step explanation:
Given that:
Fee charged by Fun Reads Bookstore = $40
Charges per book = $5
Let x be the number of books.
A(x) = 5x+40
Fee charged by Cool Covers Bookstore = $100
Charges per book = $2
B(x) = 2x+100
For making Cool Cover Bookstores club a better deal,
B(x) > A(x)
2x+100 > 5x+40
2x-5x > 40-100
-3x > -60
Dividing both sides by -3
![\frac{-3x}{-3}>\frac{-60}{-3}\\x>20](https://tex.z-dn.net/?f=%5Cfrac%7B-3x%7D%7B-3%7D%3E%5Cfrac%7B-60%7D%7B-3%7D%5C%5Cx%3E20)
Hence,
You have to buy more than 20 books to make Cool Cover Bookstore club a better deal.
We can find this integer using a system of equations. The first thing we look at is the first sentence.
Let's call X The first integer,
Let's call Y the second integer.
So, X+Y=61 and X-Y= 1
Using Substituion on the second equation, we get
X=Y+1
(Now we plug in Y+1 into the second equation for X)
So,
(Y+1)+Y=61
2Y=60
Y=30
So, one of the integers is 30.
Now to find the second, we go back to
X=Y+1
X=30+1
X=31.
So, the integers are 31 and 30.
Hope this helps!