Answer:
4) 1400 
5) 304
or 954.56
6) 315 
Step-by-step explanation:










after the storm, there was 1126 3/4 pounds of salt left. i dont know what exactly you mean by they used a little more than 13 of what was remaining though.. sorry. i hope this helped II-//
Hm good question. Maybe you can measure the temperature in a place and measure another temperature in a other place and add it together.