B if I'm not mistaking
if I'm wrong I apologize
Answer:

Step-by-step explanation:
Let
x ----> the number of lions
y ----> the number f tigers
z ----> the number of zebras
we know that
----> equation A
Remember that


To find out the number of lions, multiply the total animals by the percentage of lions

To find out the number of zebras, multiply the total animals by the percentage of zebras

Substitute the value of x and the value of z in equation A and solve for y



I don't see an answer choice for this question. The equation for circumference is 2

r
You should get 2pi(3.5)=21.99
She needs 20 pages of stickers because 200/10=20