Concept explainers
To find: The possible scores you can earn on your third test to have a test average between 85 and 90, inclusive.
Answer to Problem 3LC
Your score on the third test must be between 85 and 100, inclusive.
Explanation of Solution
Given information: The first two test scores in science are 83 and 87.
Calculation:
Let the marks scored in the third test be
A.T.Q
Multiply each part by 3.
Subtract 170 from each part.
Your score on the third test must be between 85 and 100, inclusive.
Chapter 3 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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