A common metric of health is the Body Mass Index (BMI), which is calculated simply as the weight in kilograms divided by the height in meters squared ($BMI=kg/m^2$)

a. Using R: Create a function called `calculate_bmi()` that takes height in inches and weight in pounds as parameters and returns the BMI. Use the conversions $\small inches*0.035=m$ and $\small pounds*0.753592=kg$. Test the function with a height of 72" and a weight of 190 lbs. (15 points)