Answer:
10x+6
Step-by-step explanation:
the area of a rectangle is (length+height)*2
so you have to add two representations of the length and height and then multiply it by 2
Maybe 34.5 !!!!!!!!!!!!!!
Answer:

Step-by-step explanation:
It's already in a form that only ha positive exponents. Just to state it though you could rewrite it as
or
The question asks for positive exponents though so yu don't need to do that.
You also need to know
so in this case 
so 
I think it would be B but i am not 100% sure.
Answer: a. -3/5
Step-by-step explanation: