finalGrade()

Instructions

1.Write a function, finalGrade(). It should:

• take three arguments of type number

• find the average of those three numbers

• return the letter grade (as a string) that the average corresponds to

• return ‘You have entered an invalid grade.’ if any of the three grades are less than 0 or greater than 100

0-59 should return: 'F'
60-69 should return: 'D'
70-79 should return: 'C'
80-89 should return: 'B'
90-100 should return: 'A'

main.js

// Write your function here:

// Uncomment the line below when you're ready to try out your function

// console.log(finalGrade(99, 92, 95)) // Should print 'A'

// We encourage you to add more function calls of your own to test your code!