Henry is saving money for college. he earns $210 each week working part time after school and the weekends. henry currently has $2,240 in savings. his parents put $100 in his savings account each week and he saves one-third of his paycheck each week. which expression represents the situation. (n represents the number of weeks) a) 2,240 + 170n b) 2,240 + 310n c) 2,240 + 210n + 100n 3 d) 2,240 + 210n + 100n 3

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.