You took four tests for a class and now you want to calculate your overall grade. Since you are taking FIN3414, you know how to calculate your "weighted grade" yourself. Your grade for each test (n) and the weight of cach test (w) are given below. Calculate your weighted average (wit) + Wyry + W3r3 + Ward) Weight of test (wi) Grade (ri) Test 1 259 75% Test 2 1590 89% Test 3 40% 85% Test 4 20% 96% O 87.85% O 85,30% O 88.70% O 87.04% 86.705