being able to calculate your final grade at the end of the semester is an important tool for measuring your learning outcome. while some courses may simply use a total earned divided by total possible formula for grade calculation, many courses assign weights to each component to reflect their importance. design requirements you will design a calculator that will allow you to easily calculate your grade. the xhtml page with the form data has been provided for your use in this lab assignment. three inputs are required for each category: points earned, maximum points possible, and weight as a percentage out of 100. these values will be passed to the .php file that you need to create and name finalgrade.php