Please help

A. 16. 7 feet

B. 21. 5 feet

C. 20. 2

D. 18. 8 feet

x = 3 ± √(5+y)

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.