Answer:The number of books that he had before last week is 28
Step-by-step explanation:
Let x represent the number of books that he had before last week.
Demetrious returned five library books last week. This means that the number of books left is x - 5
He returned three books this week. This means that the amount of books left is x - 5 - 3 = x - 8
He then checked out 8 more books. This means that the amount of books left is x-8-8 = x - 16
He now has 12 library books. This means that
x - 16 = 12
x = 12 + 16 = 28
It is 50!But really does anyone here no about the calculator?!
900+2,100=3000 that would be ur answer for that question
18.6 seconds ...................
Hey!
The formula for slope is: 
or: 
y₂ = 2
y₁ = 3
x₂ = 4
x₁ = 2
That gives you:
That means your answer is B
