I'm taking "part 3" to mean the 3rd of the posted questions.
If 
, then
Then when 
, we get 
.
Answer:
16
Step-by-step explanation:
3^3=27 then you have 27+13=40 now you have 56-40=16
Answer:
So we have 3 pounds of apples. 3 pounds= 6 dollars. This means for 1 pound, it costs 2 dollars. So since 1 pound is 2 dollars, take 10 pounds and multiply it by 2, you get 20 dollars. So the cost of 10 pounds is 20 dollars. If you wanna do it the short way, the cost is always twice the amount of the pounds.
I think I understand 3 but not the rest of them
