Hello TessarinaWhen ; and when . Therefore:Solve these equations to find the values of A and B. Thus, the relationship between and is:
(b) The revenue from the sales is the number of chairs sold multiplied by the selling price per chair. So:
Now use the answer to (a) and you're there.
(c) Each chair costs $40 to buy. So the total cost of chairs is $...?
Now use part (a) to write this in terms of .
Then subtract this total cost from the total revenue in part (b) to find the total profit in terms of .
Can you complete it now?