Which situation results in a change that could be modeled by a positive number?

Question

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(1 point)
Responses

a change in elevation from 492 feet to -783 feet
a change in elevation from 492 feet to -783 feet

a change in elevation from 632 feet to 312 feet
a change in elevation from 632 feet to 312 feet

a change in elevation from sea level to -87 feet
a change in elevation from sea level to -87 feet

a change in elevation from –12 feet to 123 feet
a change in elevation from –12 feet to 123 feet

Answer 1

A change that could be modeled by a positive number represents an increase in value.

Let's analyze the options:

1. A change in elevation from 492 feet to -783 feet: This is a decrease and would yield a negative change.

2. A change in elevation from 632 feet to 312 feet: This is also a decrease and would yield a negative change.

3. A change in elevation from sea level to -87 feet: This is a decrease in elevation below sea level, which would also yield a negative change.

4. A change in elevation from –12 feet to 123 feet: This is an increase in elevation (from below sea level to above sea level) and would yield a positive change.

Thus, the correct answer is: a change in elevation from –12 feet to 123 feet.