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 
Step-by-step explanation:
The 18 Pack why is because it has more Coke than the other one and it is less expensive than the other one if it had 18.
Answer:
Eden has 40 basketball cards
Step-by-step explanation:
Just do 5*8 which equals to 40, you can go back and check your answer by finding the 1/5 of 40 and you would receive 8
Answer: 18 1/5 + 22 2/5 + 40 1/5
Step-by-step explanation:
To get equivalent expression we need to remove the parenthesis multiply negative sign inside the parenthesis when we multiply negative and negative it becomes positive. So the expression becomes 18 1/5 + 22 2/5 + 40 1/5