Answer:
She will be able to fill 9 shelves with 1 book left over.
Let me know if you need more help! :)

First, replace

and

. Then you have

If we take

, then immediately we see a differential in the numerator in the form of

. So the integral becomes

and evaluates to

making (A) the correct answer.
Answer:
2
Step-by-step explanation:
Answer: 3/8
Step-by-step explanation:
Formula is,
P(A|B) = P(A and B) / P(B)
= (3/10) / (4/5)
= 3/8