Ce inseamna cardinalul unei multimi?

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys

What percent of the circle below is shaded?

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.