To calculate a weighted average, use the formula weighted average where w is the weight of the piece of data, x; xw is the sum ofΣ» the products of each piece of data multiplied by its weight; and wis the sum of the weights. Suppose that your final grade for a course is determined by a midterm exam and a final exam. The midterm exam is worth 45% of your grade, and the final exam is worth 55%. If your midterm grade is 76 and your final exam grade is 96, calculate your final weighted average. Your weighted average is?