Two students are studying for the final exam in mat 172 together. the final exam is worth 30% of their grade, their average test grade is worth 50% and their average homework grade is worth 20%. student a has an average test grade of 88 and average homework grade of 94, and student b has an average test grade of 91 and average homework grade of 80. they both get a 92 on the final exam. which one(s) will earn an a in the class? (instructions: 1. convert the percentage to a decimal: 50% - 0.5. 2. multiply the average for a category by the decimal. 3. add the numbers together to get the final grade.)