If susan finished her lunch at 1: 00 p. m., and it took her 45 minutes to eat, what time did she start eating lunch?

Ibelieve that c. recording would work best.

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.