Find the length of a side of a square with area of 169m^2

Area= width times height

Since the area is given in the question you would need to find the width or height. Since this is a square, all sides have he same width/height. So in order to find the answer just take the square root of the area.

Square root of 169= 13

13m

An inverse relationship has the formula  where is the constant of proportionality. In the problem, the cost is inversely proportional to the number of people. Let (x) be the number of people and let (y) be the cost per person of the bus rental. Computing for the constant of proportionality,

Use this value of K to compute for the cost (y) if 60 people (x) went on the trip:

The answer is $22.00