When paying for a restaurant order, a customer gave a $3 tip on a $20 meal. What percent was the tip?

.15 or 15%

Step-by-step explanation:

20 × .15 = 3

hope this helps, good luck :)

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.