I need help please, I have no clue how to answer this

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Astudent survey asked: "how tall are you (in inches)? " here's the data: 67, 72, 73, 60, 65, 86, 72, 69, 74 give the five number summary. a. median: 73, mean: 70.89, iqr: 5, min: 60, max: 74 b. 60, 66, 72, 73.5, 86 c. 60, 67, 72, 73, 74 d. 0, 60, 70, 89, 74, 100