Answer:
4
Step-by-step explanation:
Answer: 25 as a exponent is
.
Step-by-step Explanation: To write a exponent, you figure out the main number and how many times the main number is repeating.
Ex: 91x91x91x91x91x91x91
Main number: 91
Repeating how many times: 7
Final answer: 
Answer:
a
Step-by-step explanation:
a
15 - 7 = 8 so there are many you can do like:
16 - 8 = 8
20 - 12 = 8
22 - 14 = 8
and so on, there are many.