There are 30 people in student council that are running for the offices of president and vice president. in how many different ways can those offices be assigned?

900
870
59

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

Linda loans her friend $250 with a 5% monthly intrest rate. how much was the whole loan?