When an object is dropped from a point above the ground the amount of time it takes to hit the ground is given by the equation =29.8‾‾‾√, where d is the distance above the ground, in meters, and t is given in seconds. If an object falls for exactly 50 seconds, how high above the ground was it dropped? (Round your answer to the nearest foot)

I'm pretty sure it's b). i try drawing the functions out and b is the one that stands out or isnt a "line"

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.