In a proposed business venture, a businesswoman estimates there is a
70% chance she will make $56,000 and a 30% chance she will lose $
57,000. Determine her expected value.

11.3#6

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.