Concept explainers
In Exercises 9 –24, find the indicated function values.
a.
b.
c.
d.
e.
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Intermediate Algebra for College Students (7th Edition)
- In Exercises 87–88, use the graph of f(x) = |4 – x| to solve each equation or inequality. y flx) = |4 – x| y = 53- y = 1 $ 9 10 87. 14 - x| = 1 88. 14 - x| < 5arrow_forwardIn Exercises 11–18, use the function f defined and graphed below toanswer the questions. (a) Does f (-1) exist?arrow_forwardWrite a function to model the scenario [y=a (x-h)2 + k]arrow_forward
- Your cardiac index is your heart's output, in liters of blood per minute, divided by your body's surface area, in square meters. The cardiac index, C(x), can be modeled by 7.644 C(x) = 10 s xs 80, where x is an individual's age, in years. The graph of the function is shown. Use the function to solve Exercises 95–96. 7.644 C(x) = %3D 10 20 30 40 50 60 70 80 90 Age 95. a. Find the cardiac index of a 32-year-old. Express the denominator in simplified radical form and reduce the fraction. b. Use the form of the answer in part (a) and a calculator to express the cardiac index to the nearest hundredth. Identify your solution as a point on the graph. 96. a. Find the cardiac index of an 80-year-old. Express the denominator in simplified radical form and reduce the fraction. Cardiac Index liters per minute squar e met ers 654 32arrow_forward9 grade math. Function notation. Evaluate each function.arrow_forwardIn Exercises 65–70, use the graph of f to find each indicated function value. y = f(x) 65. f(-2) 66. f(2) -5 -4--2 2 4 5 67. f(4) 68. f(-4) 69. f(-3) 70. f(-1)arrow_forward
- Consider the table of values for the function y fx) 3 1 3 2 4 4 What is the value of (3)) 3. 4 2. 1arrow_forwardFor Exercises 9–18, graph the functions by plotting points or by using a graphing utility. Explain how the graphs are related. 9. a. f(x) = x b. g(x) = x + 2 c. h(x) = x² – 4 13. a. f(x) = |x| b. g(x) = -|x| 16. a. f(x) = |x| 1 b. g(x) = x| 14. a. f(x) = Vĩ b. g(x) = - Vĩ c. h(x) = 3|x| 10. a. f(x) = |x| b. g(x) = |x|+ 2 c. h(x) = |x| – 4 17. a. f(x) = V b. g(x) = V-x 15. a. f(x) = ? %3D b. g(x) = 11. a. f(x) = Vx b. g(x) = Vx – 2 c. h(x) = Vx + 4 18. a. f(x) = VI b. g(x) = V-x c. h(x) = 2r 12. a. f(x) = x b. g(x) = (x – 2)? c. h(x) = (x + 3)?arrow_forwardExercises 111-114: Determine the domain and range of function f. Use interval notation. 111. f(x) = =(x + 1)² – 5 112. f(x) = 2(x – 5)² + 10 113. f(x) = V-x – 4 – 2 114. f(x) = -Vx – 1 + 3arrow_forward
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