Question

The point

Analyze Henry's work. Is he correct? Explain your
answer.
O No, he did not substitute properly in step 1.
O No, he incorrectly evaluated an exponent in step 2.
O No, he did not add correctly in step 3.
O Yes, he calculated the distance correctly.

Answer 1

I don’t know the answer to this but I am working on it right now

Answer 2

The correct statement, is No, he incorrectly evaluated an exponent in step 2. (Option B).

How to calculate the distance between the points?

The distance from the point of origin to the point (8, 3, -1) is calculated by using the formula for distance between two points as follows;

D = √ [ (8²) + (3²) + (-1)² ]

D = √ (64 + 9 + 1)

D = √ (74)

So from the steps shown by Henry, we can see that in his step 2 we have;

D = √ (64 + 9 + 2)

This implies that Henry incorrectly evaluated the exponent of "-1" in the step 2.

So Option B is the correct answer.