Your answer is -4.23 degrees fahrenheit.
To get that answer you must take you starting temperature, 9.17, and your decreased amount of temperature, 13.4, and subtract them.
So, you have 9.17 - 13.4 = -4.23
You can not reverse the numbers or it will give you the wrong answer.
So, the right option is 1. so if my ans was helpful u can follow me.
Answer:
0.081
Step-by-step explanation: