From midnight to 2:00 am, the temperature dropped 1.25°C each hour. If the temperature at 2:00 am was 5.5°C, what was the temperature at midnight?

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

The heaviest 16% of all men in weight weigh more than how many pounds ?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?