458,500 because they are 1000 apart and 500+500=1000
so x=5
substituting for x in the equation we get:

Ans C: 16
No, John is incorrect.
<h3>
Correct work shown:</h3>








The correct answer should be x = 7 or x = -1
Answer:
6.5%
Step-by-step explanation:
Percentage error formula =
|Estimated value - Real value|/Real value × 100
From the above question,
Estimated value = 17,466
Real value = 16,400
Percentage error = |17,466 - 16,400|/16,400 × 100
= 1066/16,400 × 100
= 0.065 × 100
= 6.5%
Therefore, the percent error = 6.5%