Question

Solve the following problems. An average grade of 80 on all exams in a course is needed to earn a B in the course. On her first four exams, Jacqueline's grades are 93, 88, 81, and 86. What is the minimum grade that Jacqueline can receive on the fifth exam to earn a B in the course?

Answer 1

To earn a B in the course, Jacqueline needs a minimum grade of -35 on the fifth exam.

Step-by-step explanation:

To find the minimum grade Jacqueline needs on the fifth exam to earn a B in the course, we need to calculate the average of her first four grades and subtract it from 80. We can then multiply the result by 5 to find the minimum grade needed on the fifth exam.

First, calculate the average of her first four grades: (93 + 88 + 81 + 86) / 4 = 87.

Next, subtract the average from 80: 80 - 87 = -7.

Finally, multiply the result by 5 to find the minimum grade needed on the fifth exam: -7 * 5 = -35.