Question

If f(x)= | x+5 | + x + 5 , find f(-7)

Answer 1

Explanation:

Answer 2

| x+5 | refers to the absolute value of x+5, which means it is always positive and f(x) is like y, its a variable

so f(-7) means you sub -7 into x in the function, you get

f(-7)= | -7+5 | + (-7) + 5 = |-2| -2 = 2-2= 0