<em>Note: Your answer choices remain a little unclear. But, I have solved the concept and solution, so you can easily figure it out.</em>
Answer:

Step-by-step explanation:
Given the expression

solving the expression

apply the rule: 


simplify

Therefore, the simplified form is:

<em>Note: Your answer choices remain a little unclear. But, I have solved the concept and solution, so you can easily figure it out.</em>
There is not enough information
Answer:
2 books
Step-by-step explanation:
1+1=2
Answer: 1500 readers
explanation: all readers take up 100%
100/50=2
100% / 50 = 2%
2% x 50 = 100%
30 x 50 = 1500 readers