Help will give medal

Jorge was tracking the decreasing temperature in the morning. At 7 a.m., it was 65 degrees Fahrenheit. At 9 a.m., it was 55 degrees Fahrenheit. If Jorge made the function f(x) = −5x + 100, what would the −5 represent?

The temperature at midnight

The length of time he recorded for

The total change in degrees

The rate at which the temperature was decreasing

Question

Help will give medal 

Jorge was tracking the decreasing temperature in the morning. At 7 a.m., it was 65 degrees Fahrenheit. At 9 a.m., it was 55 degrees Fahrenheit. If Jorge made the function f(x) = −5x + 100, what would the −5 represent?

 The temperature at midnight

 The length of time he recorded for

 The total change in degrees

 The rate at which the temperature was decreasing

anonymous · Answer

I'm pretty sure it's not A but I could be wrong.

anonymous · Answer

Should be the rate at which the temperature was decreasing.

anonymous · Answer

Plug in your time for x and you should get out your temp.

uri · Answer

It's not A. It's D.. You basically plug in -5 in the function instead of x and you get 75. This means temperature is decreasing 5/each hour..so D.

anonymous · Answer

Okay thanks