The answer should be D.
The maximum amount she can add is 7 books and no more, so the first two are wrong. It’s also allowed to be exactly seven, which is why it would be a closed circle.
Hope this helps!
1. C irrational
2. B Rational, integer
3. D 3.14...
So we can take X as the n.o of pages of the entire book
so 1x/5 +40= 7x/10
pls remember the total n.o of each book is X
therefore
40=7x/10-1x/5
to solve this u need to make the denominator's the same
40=7x/10-2x/10
40=5x/10
40*10=5x
400=5x
400/5=X
80=x
Answer:
choice C: x2 -3x -3
Step-by-step explanation:
(3x^2-7x+2)-(2x^2-4x+5)
becomes
3x^2-7x+2 -2x^2+4x-5
adding
3x^2-2x^2 -7x+4x +2-5
which is
x^2 -3x -3