Answer:

Step-by-step explanation:




<span>The answer is 25. The pattern is -9, +13, +6, -9, +13, +6, then -9 again.</span>
Answer:
2 1/2
Step-by-step explanation:
5 divided by 2
Answer:
20
Step-by-step explanation:
80% of 25 is 20, even if you put it into a calculator
20 to 30 is a 10% increase