So,
The problem states that a negative change represents when She climbs down. As you can see, all starting elevations are -200 feet.
Then,
Let's analyze row A.
If the starting elevation was -200 and she climbs 150 ft down, that means that we're going to substract. So, the final elevation is:
That's the mistake that I indetified.
The rest of the table is correct :). Well done!
Alright. So,
For part B, we're asked to find an equation that represents the values in the table for rows C and D, and then draw the situation.
Let's start with row C:
The starting elevation was -200ft. Given that she climbs 200ft up, the equation that represents her final position can be found only adding 200ft up:
In the number line, this is:
A similar situation occurs with row D:
Finally, the expression:
Tells us that the spelunker is situated at an initial elevation of -75ft. Then, she climbs up 100 ft, to obtain 25ft, which is her final elevation.
On the number line, this is: