A pet store is having a pet fish sale. Mrs. Smith bought koi and paid with a​ $50 bill. Write an algebraic expression to represent how much change Mrs. Smith got back. Use the chart to answer the question. ( Molly- 2$ , Catfish, 4$, Koi, 7%=4 , Bala, 6$)

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.