The Empire State Building weights about 7.3 x 10^8 pounds The one World Trade Center building weights abut 88,200,000 pounds what is the total weight in pounds of these two buildings? Expressing your answer in scientific notation in the from a x 10 what are the vaules of a and b

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.