Karen is selling necklaces at an arts and crafts fair. She paid $3.50 per necklace, plus 6% of the total order for shipping 0/1 When she sells each necklace at the fair, she adds a 150% markup to the total price she paid for the necklace (including the cost of shipping). What is the selling price of ONE necklace? Round to the nearest hundreth.

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.