Ocean tides are the result of the gravitational force between the sun, the moon, and the earth. when ocean tides occur, the earth's crust also moves. this is called an earth tied. the formula for the height of an earth tide is y = x/3 where x is the height of the ocean tied. fill in the table (pic provided)

all work is shown and pictured

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.