3. graph the step function over the interval .-2 < _x< _2 f(x)=|x+3|

we can plot this function by assigning the values -2, -1, 0, 1 and 2 into the equation and get the corresponding f(x) or y value. the values are:

x                                                          f(x) or y

-2                                                      1

-1                                                      2

0                                                          3                         

1                                                          4

2                                                          5

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.