What is a relation and how is it different from a function? How do you find the domain and range of a function?

A25-inch wide drum is used in a marching band. what area does the top of the drum cover? round to the nearest hundredth. (use 3.14 for pi.)

The graph below shows the amount of money left in the school’s desk fund, f, after d desks have been purchased. for each new desk that is purchased, by how much does the amount of money left in the school’s desk fund decrease?

Determine if the equation defines y as a function of x: 2xy = 1. yes o no