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Simplify.
3
- 2 x – } – 5x +
3
10
+
х
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Do not use decimals in your answer.

D. 16 °F

Step-by-step explanation:

Given:

The initial temperature of the outside is 0 °F.

Decrease in the temperature in the first hour = 12 °F

Therefore, temperature after 1 hour = 0 - 12 = -12 °F

Now, decrease in the temperature in the second hour = 4 °F

Therefore, temperature after 2 hours = -12 - 4 = -16 °F

Let 'x' °F be added to the final temperature in order to bring it to 0 °F.

Therefore,

Adding 16 on both sides, we get:

Hence, we need to increase the temperature by 16 °F to attain the same initial temperature of 0 °F.