Write a function rule for the table

The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Data are collected to see how many ice-cream cones are sold at a ballpark in a week. day 1 is sunday and day 7 is the following saturday. use the data from the table to create a scatter plot.