Concept explainers
The possibility to earn a B in the course is to be calculated.
Answer to Problem 3P
Therefore it is not possible for student to earn a B in the course.
Explanation of Solution
The score obtained on thefirst three tests are
The maximum score can be earn in a test is
The possible score to earn a B in the course is calculated as follows:
To earn a B in the test,the average score mustbebetween
The possible score student can earn on the last test to get a B in the course is calculated by writing and solving the compound inequality.
The compoundinequity for the problem is written as follows:
Where,
- x represents the score in the last test.
Solve the inequality,
Simplify the inequality
Subtract
Simplify
To earn a B, the student must score between
Therefore it is not possible for student to earn a B in the course.
Chapter 3 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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