Problem
Write a script called activity that takes an integer score (out of 100) as an argument and output the +/- letter grade. Use the rounded "Course grading" table of the syllabus. Example: bash-3.2$ ./activity4.2-6 88 Your grade is A- Include a first line that calls the bash shell as the interpreter Add a comment to state the purpose of the script and other comments to make the script easier to read.