12^n
------- = 12^4
12^5
Let's clear out the fraction. To do this, mult. both sides by 12^5:
12^n = (12^4)(12^5) = 12^9 Then n = 9 (answer)
Answer:
1/2(n+7)
the sum of n and 7 is (n+7). to half it just put 1/2 in front of the parentheses. :)
hope it helps you!!!!!!!!!!
3 would be billion
2 would be 10 billion
1 would be 100 billion
:)