Question 50
InequalitiesThe mean of the numbers 2, 5, 2x and 7 is less than or equal to 5. Find the range of values of x.
- A.x ≤ 3
- B.x ≥ 3
- C.x < 3
- D.x > 3
Show the answer and explanation
Answer: A (x ≤ 3)
Explanation
(14 + 2x)/4 ≤ 5, so 14 + 2x ≤ 20 and x ≤ 3.