Answer:

Step-by-step explanation:
Whenever you are adding exponents that have the same base (in this case the base is 9), you simply add the exponents. The base will stay the same because you are just adding the exponents

So, your answer is 
Hope this helps!
Answer:
16
Step-by-step explanation:
You would lay out the equation for area
A=(L)(W)
then plug in the variables
8x^2+26x+12=2x+5(L)
then solve for L
Answer:
$10.71
Step-by-step explanation: