PLEASE HELP AND ILL GIVE 10 POINTS AND BRAINLIEST. ONLY ANSWER A, B, C, I

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.