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.
Answer:
70,000
Step-by-step explanation:
66,681 is closest to 70,000 rather than 60,000.
Answer:
11/12
Step-by-step explanation:
1 2/12 = 14/12
14/12 - 2/12 - 1/12
since they all have 12, it doesn't matter until the end
14 - 2 = 12 - 1 = 11
put the /12 behind the 11 and you have an answer
2.5/x = 1/16
cross mutiply
x = 40 oz
40 oz - 6oz = 34 oz
She has 34 oz or 2 1/8 pounds
Answer:
y= 13/6 xn - 3/2,x€ R, n€ R