Okay so im in desperate need of help with these two questions. i have until midnight to get my grade up so i can pass the class, im extremely behind with like 6 assignments. if someone could help me out with these two questions id really appreciate it

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.