The San Pedro Underwater Archaeological Preserve in Long Key is the site of the wreckage of the San Pedro, a ship that sank in 1733. Today, the San Pedro lies under 18 feet of water. Which expression

represents the depth of the wreckage below sea level?

F. (-9) • (-2) H. 9 • (-2)

G. -36 ÷ (-2) I. –(-36) ÷ 2

Ineed with this same question!

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.