Apple is currently charging $179 for their AirPods and wants to conduct market research to see what will happen when they raise or lower the price. At one test location, with the price of $179 they
sold 45 AirPods in a week. Data showed that for every $2 increase in price, sales declined about 3
sales per week.
Assuming that this data can be counted on to represent how changing the price affects the number
of buyers generally, mathematize this situation.'

First, think of what you know. you know that the number t the end of the equation will need to be subtracted because it is the money he lost from buying the lawn mower. and your first two weeks have negative profit, so that tells you that c and d are wrong. now you can plug any of the weeks into a and b to see which one works. i'll start with plugging week 1 into a.this isn't right because it says your answer for week one should be -90.so now we need to try the same thing with b.this one got you the right answer, (sometimes if you only check with one of the weeks multiple will work so you need to check with more of the weeks, but it worked out fine here)this means that b is the correct answer.let me know if you need more clarification. i hope this : )