The question is worded a bit strangely (in my opinion anyway), but I think your teacher wants you to describe how exponents work.
Let's say we had the expression 
The base is 5 as its the bottom most value (think of something like the base of a tree or building). The exponent is 3.
The exponent of 3 tells the reader to multiply the base 5 by itself 3 times like so

With larger exponents, it becomes more tedious to write out all the repeated multiplications, which is why many calculators have an exponent button to save time.
The percentage of increase was 87.027... %
<em><u>Explanation</u></em>
The value of U.S exports to China increased from $1480 million to $2768 million.
Suppose, the percentage of increase is 
So, <u>the amount of increase</u> =
of 1480 
Thus, the equation will be......

So, the percentage of increase was 87.027... %
Answer:
A right angle.
Step-by-step explanation:
65+25 =90
Answer:
Step-by-step explanation:
Oh great!
So the first integer is 61.
Then the others must be 62, 63, and 64. To check, you can add them all together. 61+62+63+64=250.