If the average (arithmetic mean) of x + 1, x + 5, and x + 9 is 0, then x = Options
A) –5  B) –4  C) –2  D) –1  E) 0
(x+1 + x+5 + x+9)/3 = 0   =&gt;3x + 15 = 0   =&gt;x = -5   –5nswer –5
<result>A</result>
If the average (arithmetic mean) of x + 1, x + 5, and x + 9 is 0, then x =