Given f(x) = 2x - (x + 4), what is the value of f(-4)? What is the value of f(16)? PLEASE HELP

f(-4) = -8

f(16) = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

f(x) = 2x - (x + 4)

f(-4) is x = -4

f(16) is x = 16

Step 2: Evaluate

f(-4)

Substitute:                    f(-4) = 2(-4) - (-4 + 4)Add:                              f(-4) = 2(-4) - 0Multiply:                        f(-4) = -8

f(16)

Substitute:                    f(16) = 2(16) - (16 + 4)Add:                              f(16) = 2(16) - 20Multiply:                        f(16) = 32 - 20Subtract:                       f(16) = 12