Marissa just completed her first semester in college. She earned an A in her four-hour statistics course, a B in her three-hour sociology course, an A in her three hour psychology course, a C in her five-hour computer programming course, and an A in her one-hour drama course. Determine Marissa’s grade-point average.

Approach Assign point values to each grade. Let an A equal 4 points, a B equal 3 points, and a C equal 2 points. The number of credit hours for each course determines its weight. So a five-hour course gets a weight of 5, a four-hour course gets a weight of 4, and so on. Multiply the weight of each course by the points earned in the course, add these products, and divide this sum by the sum of the weights, number of credit hours.