Answer:

Step-by-step explanation:
Write a function whose k(x) values are 5 more than four times the principal square root of x.
So,
the principal square root of x 
four times the principal square root of x 
5 more than four times the principal square root of x 
Thus,

Answer:
Step-by-step explanation:
531.55 = 125% of x = 1.25x
x = 531.55/1.25 = 425.24