Question

The temperature Saturday is -13°, and on Sunday it is -4°. Which equation would be used to show the difference in temperature from Saturday to Sunday?
-4 + 13 =
-4 - (-13) =
-4 - 13
4 + (-13)

Answer 1

To find the change in the temperature, solve for the equation below.

$x - 13 = -4$

We now know that the temperature changed by 9 degrees.

$x = 9$

So, we are looking for the answer which indicates that the temperature changed by 9 degrees.

$-4 + 13 = 9$