Loading…
Example 2.78 from Elementary Algebra, 2.7 Solve Linear Inequalities
Solve Linear Inequalities: example 2.78
Translate and solve. Then write the solution in interval notation and graph on the number line.
Thirty less than x is at least 45.
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
Solution
Translate. Solve—add 30 to both sides. Simplify. Write in interval notation. Graph on the number line.
Your turn
The book's Try It right after this example: same idea, new numbers. Only the answer is given.
Translate and solve. Then write the solution in interval notation and graph on the number line.
Nineteen less than p is no less than 47
How did it go?