Question

you scored a total of 258 on the first three tests in algebra but you were sick and unable to take the fourth test. To get a B you must score at least an 84 but less than a 93. Show the range you must score in order to receive an average of a B on all four quizzes.​

Answer 1

To get an average of a B on all four quizzes, you must score a total of at least 84 x 4 = <<84*4=336>>336 on the four quizzes.

Since you have already scored a total of 258 on the first three tests, you need to score a minimum of 336 - 258 = <<336-258=78>>78 on the fourth test.

To get an average of a B on all four quizzes, you must score between 84 and 93 on the fourth test. This means that you must score at least 84 and less than 93 on the fourth test, which is a range of 84 to 92 (inclusive).

Therefore, the range you must score in order to receive an average of a B on all four quizzes is 84 to 92.

Explanation: