What is 20% of 81 ?

pls help i need the right answeer

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12

Explain how you divide powers with like bases.discuss why the bases have to be the same.how are these rules similar to the rules for multiplying powers with like bases.