Can someone help me with questions 22, 23, and 24 please I’ll appreciate it!

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

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?

Given: △acm, m∠c=90°, cp ⊥ am , ac: cm=3: 4, mp-ap=1. find am.