Question

Steve has the following scores on the exams for the semester: 89,92,87. What will he need to make on the fourth exam to have a final average of a 92 or better? Write the answer as an inequality

Answer 1

So, first find the average of 3 semester scores..

Tell me what is the sum of 89, 92 and 87???

Answer 2

The average is 89.333

Answer 3

Of what???

Answer 4

Yes..

Answer 5

Of the three semesters…

Answer 6

See, now let the marks scored in 4th semester be x:

do you get this:

\[Average = \frac{89 + 92 + 87 + x}{4}\]

Answer 7

Yes

Answer 8

Now you know that average = 92 and:

\[89 + 92 + 87 = 89.3 \times 3\]

This one you got or not??