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3/9/2020 Graded Exam #4 1/26 MAT101_MH_V6 | Topic 14: Solving Linear Systems Using Augmented Matrices (877) 787-8375 HELP CENTER Started on Sunday, March 8, 2020, 1:13 PM State Finished Completed on Sunday, March 8, 2020, 2:07 PM Time taken 53 mins 46 secs Grade 140.00 out of 175.00 ( 80 %)
3/9/2020 Graded Exam #4 Question Correct 8.75 points out of 8.75 Graph the function. f (x) = 1
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3/9/2020 Graded Exam #4 3/26 b. c.
3/9/2020 Graded Exam #4 Question Correct 8.75 points out of 8.75 Solve the problem. A power company burns coal to generate electricity. The cost C ( x ) (in $1000) to remove x % of the air pollutants is given by . If the power company budgets$1.2 million for pollution control, what percentage of the air pollutants can be removed? Round to two decimal places, if necessary. Select one: 3
3/9/2020 Graded Exam #4 Question Correct 8.75 points out of 8.75 Solve the inequality. Write the solution set in interval notation. 4 p 17 Select one: 2 4 a. [ − 17 2 , 17 2 b. $$(-\infty, -\frac{\sqrt{17}}{2})$$ U $$(-\frac{\sqrt{17}}{2}, \infty)$$ c. $$(- \frac{\sqrt{17}}{2} , \frac{\sqrt{17}}{2})$$ d. $$(-\infty, -\frac{\sqrt{17}}{2}]$$ U $$[\frac{\sqrt{17}}{2}, \infty)$$ The correct answer is: $$(-\infty, -\frac{\sqrt{17}}{2}]$$ U $$[\frac{\sqrt{17}} {2}, \infty)$$ ]