I need help with 27 I have like 50 minutes before I have to submit pls answer mee

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

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Arectangle has a perimeter of 24 inches. if the width is 5 more than twice the length, what are the dimensions of the rectangle?