Raphael is taking a walk at a rate of 2 miles per hour. Jon is walking at a rate shown on the graph below where x is the number of hours walked and y is the distance. Who is walking faster? *

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

These are the multiples of 15 but what you are probably asking or what are the factors of 15