remember to show ALL of your work on every problem. If there is no work to show, then include a sentence or two explaining your answer. Here are the basic rules of showing work: a) Each step should show the complete expression or equation rather than a piece of it. b) Each new step should follow logically from the previous step, following rules of algebra. c) Each new step should be beneath the previous step. d) The equal sign, =, should only connect equal numbers or expressions. Our textbook is full of good models of work shown correctly. If you have questions about showing work, please ask. Please Show or Explain Your Work on Each Problem. 4) The height of an object thrown downward with a velocity of 32 ft/sec from the roof of a 150 feet tall building is modeled by 2 h ( t ) =16 t 32 t+150 Here, h is the height of the object off the ground (in feet), t seconds after the object is thrown. How long does it take before the object hits the ground? 5) The height of a rocket thrown upward with a velocity of 32 ft/sec from the roof of a 40 feet tall building is modeled by 2 h ( t ) =16 t +32t + 40 Here, h is the height of the object off the ground (in feet), t (seconds) after the object is thrown. (Hint: Please see section 2.3 of the ebook) a) When does the rocket reach its maximum height above the ground? Math 107 Quiz 4 b) What is its maximum height? Page 2