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Stor 112

# Stor 112 - Air Jordans cost \$160.95 at Foot Locker A pair...

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Homework 1: Linear Functions STOR 112 100 points total Please work the problems individually, without using the graphing capability of your calculator. Show your work. NO credit is given for guessing. Feel free to consult an Algebra textbook or Chapter 0 if you have questions, but if you find yourself struggling to do these problems, you should seriously consider taking MATH 110! 1. (3 points) Write the equation of the line which contains the points P:( - 2 , 5) and Q:(7 , 3). Give your final answer in slope-intercept form. 2. (3 points) Write the equation of the line which contains the point P: (6 , - 2) and which is perpendicular to the line 5 x + 2 y - 8 = 0. 3. (5 points) Find all real solutions to x + 20 x = 9. 4. (5 points) Find all real solutions to 3 x ( x + 4) = 2. 5. (5 points) Find all real solutions to x - 2 x = 35. 6. (6 points) This summer there were 867 campers at the UNC Basketball Camp. Most of the campers wore “Air Jordan” shoes, but some wore “Ground McCombs” shoes. A pair of
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Unformatted text preview: Air Jordans cost \$160.95 at Foot Locker. A pair of “Ground McCombs” cost \$9.25 at K-Mart. The campers spent a total of \$126,800.85 on shoes. How many campers wore “Ground McCombs” shoes? 7. An object is launched straight up into the air so that its height in feet after t seconds is given by the equation: h =-16 t 2 + 560 t . (a) (4 points) What is the height after 3 seconds? (b) (4 points) When will the object hit the ground? Work the following problems from your textbook: Finite Mathematics and Applied Calculus by Waner Costenoble, 4th edition 8. (5 points each) W&C 1.3: 12, 32, 38, 60, 68 9. (10 points each) W&C 1.3: 56 and 76 10. (10 points) W&C 1.4/10 — in part (b), the word “units” means “millions of sales”. 11. (10 points) W&C 1.4/14 — in part (b), you should speciﬁcally explain the meaning of the slope you found in part (a). 1...
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