Denise knit 9 scarves. each scarf is made of 40 yards of pink yarn and 25 yards of white yarn. which expression shows how much more pink yarn than white yarn denise used? a. (9 × 65) – (9 × 40) b. (40 × 25) – 9 c. (40 × 25) – (9 × 25) d. (9 × 40) – (9 × 25)

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.