Question

15. To receive a B in his English class, Nicolas must have an average score of at least 84 on five

tests. He scored 90,91, 79, and 81 on his first four tests. What is the score range he can receive
on his last test and still receive a B in the class?

Answer 1

(90+91+79+81+x)/5=84and 341+x=84*5and341+x=420and x=420-341 finally x=79