Build a Gradebook App

**Objective:** Fulfill the user stories below and get all the tests to pass to complete the lab. **User Stories:** 1. You should have a function named `getAverage` that takes an array of test scores as a parameter and returns the average score. 1. You should have a function named `getGrade` that takes a student score as a parameter and returns a string representing a letter grade based on the score. Here are the scores and their corresponding letter grades: | Score Range | Grade | | ----------- | ------- | | `100` | `"A+"` | | `90 - 99` | `"A"` | | `80 - 89` | `"B"` | | `70 - 79` | `"C"` | | `60 - 69` | `"D"` | | `0 - 59` | `"F"` | 1. You should have a function named `hasPassingGrade` that takes a score as a parameter and returns either `true` or `false` depending on if the score corresponds to a passing grade. 1. The `hasPassingGrade` function should use the `getGrade` function to get the letter grade, and use it to determine if the grade is passing. A passing grade is anything different from `"F"`. 1. You should have a function named `studentMsg` that takes an array of scores and a student score as the parameters. The function should return a string with the format: - `"Class average: average-goes-here. Your grade: grade-goes-here. You passed the course."`, if the student passed the course. - `"Class average: average-goes-here. Your grade: grade-goes-here. You failed the course."`, if the student failed the course. Replace `average-goes-here` with the average of total scores and `grade-goes-here` with the student's grade. Use `getAverage` to get the average score and `getGrade` to get the student's grade.