Exponents can make the problem smaller and look less confusing. If you see a problem with 5*5*5*5*5*5*5*5 then you're going to eventually loose count and will have to keep repeating. But if you put 5 to the 8th power then you know right away just to multiply 5, (8) times,
Answer:
c the answer is c
Step-by-step explanation:
Answer: 
Step-by-step explanation:
By the Pythagorean theorem, the unknown side has length
Therefore,
To find the total multiply the sale price by 1 + tax rate.
Total = 20 x 1.05
Total = $21.00
