Athermometer read -17° f at 1: 00 am. by 2: 30 am the temperature has dropped 9.1 degree f. what was the temperature at 2: 30 am?

The temperature was -26.1° f at 2:30 am.

Step-by-step explanation:

* In this type of problems, we must think about

- What is the meaning of wards;

 above and below or

 raised and dropped or

 increased and decreased

- For above , raised , increase

 we will add the value of them to the initial value

- For below , dropped , decreased

 we will subtract the value of them from the initial value

* In our problem:

- The reading of thermometer is -17° f at 1:00 am.

- The temperature has dropped 9.1° f when the time was 2:30 am.

* Lets use the explanation above

- We will subtract 9.1 from -17

∴ -17 - 9.1 = -26.1° f

* The temperature was -26.1° f at 2:30 am.

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step-by-step explanation:

the answer is ! ?