Last year the backgammon club had 30 members. this year the club has 24 members. find the percent of decrease in the number of members.

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?