Suppose you have a 12-sided shape numbered 1 to 12. The probability of any side facing upward when the shape is rolled is equally likely.
What are the odds in favor of rolling a 7?

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

Two numbers have a sum of -19. one number is x. what expression represents the other number?