Answer:
The answer is 24
Step-by-step explanation:

originally. Then you reduces the side lengths a so it will be

Just note that 40% is the same as 2/5.<span />
Answer: 90
Explanation: The pattern is add 3 then the next set is double. [9-6=3 then 18-9=9(or doubled)] and the pattern continues and because 45-42=3 the next number set would be 45 doubles which equals 90.
Roughly 25 because she basically ate 4 slices
The answer is A, 2x represents two times the number minus 25% is 0.25 as a decimal answer.