9. Consider x' + 11x + 18x + 10 > 10. a) What is the equation of the corresponding functi graphed and used to solve this inequality? b) Explain how the graph of the corresponding func in this case to solve the inequality. ) Solve this inequality algebraically.

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.8: Solving Absolute Value Equations And Inequalities
Problem 3E
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9. Consider x + 11x? + 18x + 10 > 10.
a) What is the equation of the corresponding function that could be
graphed and used to solve this inequality?
b) Explain how the graph of the corresponding function can be used
in this case to solve the inequality.
c) Solve this inequality algebraically.
10. Determine an expression for f(x) in which f(x) is a quartic function,
f(x) >0 when -2 <x< 1, f(x) < 0 when x < -2 or
x >1, f(x) has a double root when x = 3, and f( – 1) = 96.
11. The viscosity, v, of oil used in cars is related to its temperature, f, by
the formula v = -
67 + 12t + 50, where each unit of t is
equivalent to 50 °C.
a) Graph the function on your graphing calculator.
b) Determine the for which v> 0 to two decimal
places.
c) Determine the temperature ranges for which 15 <v < 20
to two decimal places.
temperature range
Transcribed Image Text:9. Consider x + 11x? + 18x + 10 > 10. a) What is the equation of the corresponding function that could be graphed and used to solve this inequality? b) Explain how the graph of the corresponding function can be used in this case to solve the inequality. c) Solve this inequality algebraically. 10. Determine an expression for f(x) in which f(x) is a quartic function, f(x) >0 when -2 <x< 1, f(x) < 0 when x < -2 or x >1, f(x) has a double root when x = 3, and f( – 1) = 96. 11. The viscosity, v, of oil used in cars is related to its temperature, f, by the formula v = - 67 + 12t + 50, where each unit of t is equivalent to 50 °C. a) Graph the function on your graphing calculator. b) Determine the for which v> 0 to two decimal places. c) Determine the temperature ranges for which 15 <v < 20 to two decimal places. temperature range
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