What conclusion can be made?

 B) The value of k must be between 1 and 2

The function f(x) has a restricted domain [1, 2] which means

So we can only pick inputs in that interval. If x = k, then

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.