To write an inequality which represent the situation, solve and graph the solution of the inequalities.
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Answer to Problem 11E
The inequality equation is obtained as
Explanation of Solution
Given information:
To become a NASA pilot astronaut, a pilot must log at least 1000 hours as pilot-in-command.
The pilot already logged 250 hours.
Calculation:
Let,
Since, the pilot already logged 250 hours.
So, total hours, the pilot logged is
And, to become a NASA pilot astronaut, a pilot must log at least 1000 hours as pilot-in-command.
Hence,
The inequality equation is obtained as:
Solve the inequality,
Subtract
The solution is
The graph is obtained as:
To check the solution, choose any number less than or equal to 750. Substitute the number into the original inequality.
Interpretation:
From, the above graph, it can be interpreted that the pilot should log at least 750 more hours as pilot in command of a jet aircraft to become a pilot astronaut as the pilot already logged 250 hours.
Chapter 3 Solutions
Holt Mcdougal Larson Pre-algebra: Common Core Practice Workbook
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