The answer is 9^-2

Hope this helps :)

**Answer:**

**Step-by-step explanation:**

M

**Answer:**

as I know animal testing is experent of the animals which is they trying to research about it

**Step-by-step explanation:**

that is my opinion dont judge it thankz:)

**Answer:**

8a + 2b is 14 and b - 2a is 4 1/2

**Step-by-step explanation:**

divide 8 by 2 to get 4 and multiply 2 times 5 to get 10, then add 10 + 4

If b=5 and a is 1/2 then 5 - 1/2 = 4 1/2