In your English class, you are given a list of 12 books. You are to choose 3 books to read over the summer. How many different groups of 3 books are available from the list of 12?

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account.write an expression to represent the total amount in his savings account.

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?