so basically this is a test with 15 question ( putting 5 rn will add the rest in the next question) I appreciate any answers even if you don't answer all of them <3 (this is pt 3 the final screenshots)

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.)

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Barbara deposited $300 in the bank. if the bank pays her simple interest at the rate of 4 percent per year, how much money will she have in her account at the end of 9 months?