3. Ravi is covering a table top in mosaic tiles that each measure one square inch. The table is in
the shape of a rectangle with length 1.5 feet and
width 2 feet. How many tiles does Ravi need?

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.