Question

What is the average (arithmetic mean) of (5x + 16), (8x + 4), (-4x – 2)?

Answer 1

We have ( 5x+16 + 8x + 4 - 4x -2 )/3 = (9x + 18) / 3 = 9( x + 2 ) / 3 = 3( x + 2 ) = 3x + 6;

Answer 2

The answer is 3x+6

Explanation:

Arithmetic mean of those three values can be found into 2 steps:

• All values need to be added
• Total value need to be divided to total number of values

`avg=((5x+16)+(8x+4)+(-4x-2))/3=(9x+18)/3=3x+6`

The answer is 3x+6