TIMED QUIZ! PLEASE HELP! ILL GIVE BRAINLIEST IF YOU GET IT RIGHT

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Sandy is ordering bread rolls for her party, she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.