To find the speed, distance and time, write the inequality and model the problem given.
Answer to Problem 49PPE
Explanation of Solution
Given:
A friend asks to meet at the park 2 mi away in 25 min. Then the skateboard is set off to find the speed so that you will reach at the park in at most 25 min. Calculation:
Let
Hence the required speed is at least
The travelled distance, speed and time is related as
The writing of an inequality for this problem helps to write the problem in mathematical form. Then the mathematical rules for inequality are applied to solve the inequality.
In the given figure,
Chapter 3 Solutions
High School Math 2015 Common Core Algebra 1 Student Edition Grade 8/9
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