She will read 13 pages each night after the increase
Hello,

Answer A.
Is-it clear enough for QualityGuard ?
Answer:

Step-by-step explanation:
Notice that
is a right triangle where its hypotenuse is
. We can also see that
. For this we must use the Pythagorean Theorem.
Recall:
The Pythagorean Theorem states that if you have a right triangle, the principal square root of the sum of the squares of each leg is the length the hypotenuse.
We can see that
and 

Answer:
I believe it is 50% decreased, not sure
Step-by-step explanation: