The answer to this question is 20/3
The inverse of the equation is the square root of x-16. In order to find inverse switch the y and x values and try to isolate y
5:3 if there's 5 red beads every 3 white beads, then the ratio of red to white beads is 5:3
K/3 +21 = 27
subtract 21 from both sides...
k/3 = 48
now multiply 48 and 3 to find k...
48 x 3 = 144
k=144