Aclass has 20 students. if the teacher is randomly selecting a group of 3 students to represent the class on the student council, what is the probability that sarah and her two best friends will all be chosen? 1/20 3/20 1/1,140 ps answer

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year the population of her town is changing by a constant rate

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.