High School

We appreciate your visit to Emerson needs an average of at least 90 points to earn an A in his science class So far his test scores are 92 86. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

Emerson needs an average of at least 90 points to earn an "A" in his science class. So far, his test scores are 92, 86, and 88. What is the lowest grade Emerson can score on his final test to earn an "A"?

A. \( s < 94 \), Emerson must earn below a 94 on his final test to earn an "A" in his class.
B. \( s > 94 \), Emerson must earn above a 94 on his final test to earn an "A" in his class.
C. \( s < 94 \), Emerson must earn at most a 94 on his final test to earn an "A" in his class.
D. \( s \geq 94 \), Emerson must earn at least a 94 on his final test to earn an "A" in his class.

Answer :

Answer:

D) Emerson must earn at least a 94 on his final test to earn an “A” in his class

Step-by-step explanation:

We calculate this using mean in this format:

Test Scores / # of Test ≥ 90 (which is an A)

Substitute:

(92 + 86 + 88)+ x / 4 ≥ 90

Add:

266 + x / 4 ≥ 90

Get Rid of the Denominator:

(4) 266 + x / 4 ≥ 90 (4)

Multiply:

266 + x ≥ 360

Isolate x (Subtract 266 From Both Sides):

x ≥ 94

This means that x (His final test score) has to be greater than (above) or equal to 94. A term for greater than or equal to is “at least.” Hope this helps :)

Thanks for taking the time to read Emerson needs an average of at least 90 points to earn an A in his science class So far his test scores are 92 86. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada