Kiera, an accountant, observes that her company purchased wooden toy chests at a cost of $84 and is currently selling them at a price of $104. what is the mark-up, as a percentage?

put $104 over 100% and then follow up with = to $84 over 100% and cross multiply to find x

dang that's hard tbh. try subtracting or dividing if that will .

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.