Question

Katie must take five exams in a math class. Her scores on the first four exams were 68, 66, 82, and 80. Answer the following questions:

The maximum score on an exam is 100 points. If it is not possible for Katie to achieve the required score on the exam, type np in the answer blank.

What is the minimum score must Katie get on the fifth exam for her overall mean to be at least 80? score = .

What is the minimum score must Katie get on the fifth exam for her overall mean to be at least 90? score
Mean = Sum of scores/number o f scores

80 ≤ (68 + 66 + 82 + 80 + x)/5

Solve for x.

Do the same for 90.
he got 459

Related Questions

Mike needs at least a 75% average to pass his math course. The class contains 5 exams that are equal... Katie must take five exams in a math class. If her scores on the first four exams are 77, 79, 95, an... Joe has scored 84, 89, and 90 on his first three exams in his math class. If the standard 70,80,90 s...