Jónsson is learning to write Icelandic, but he writes very slowly. To help him speed up, his teacher would like him to practice writing random 4-letter arrangements. From the 12 letters that he has learned so far, how many different 4-letter arrangements can Jónsson write? He cannot write the same letter twice in each 4-letter sequence.

The daily production of a company is modeled by the function p = -w^2 + 75w - 1200. the daily production, p, is dependent on the number of workers (w) present. if the break-even point is when p=0, what are the least and greatest number of workers the company must have present each day in order to break even? 50 points! will give brainliest!