Conner earned these scores on the first three tests in science this term: 86, 88, and 78. What is th

Conner earned these scores on the first three tests in science this term: 86, 88, and 78. What is the lowest that Conner can earn on the fourth and final test of the term if he wants to have an average of at least 83?

Using our missing average calculator, we find that the fourth score must be 80