(hi guys! , and i'll mark brainliest) in her freshman year, wilhelmina earned a b+ in algebra, a b+ in english, an a- in science, and a b- in geography. as a sophomore, she earned a b- in world history, a c+ in biology, an a- in geometry, and an a- in english literature. provide the grade points for each letter grade, then calculate each of her yearly gpa's and her cumulative gpa. show your calculations. i already know this: freshman year: algebra - 3.33 english - 3.33 science - 3.66 geography - 2.66 sophomore year: world history - 2.66 biology - 2.33 geometry - 3.66 english literature - 3.66 does anyone know how to calculate her yearly gpa's and her cumulative gpa?