For this case, the first thing you have to keep in mind is that we are in the presence of a piece function. We have then: For [0, 5]: A car traveling at 46 mi / h slows to a speed of 23 mi / h in 5 seconds. For [5, 10]: It maintains that speed for 5 seconds. For [10, 15]: then slows to a stop after 5 more seconds. In this case: x axis: represents time y axis: represents the speed. Answer: See attached image for the graphic v (t) vs t.
17. You need to know the number of chairs in a row, so 24/4 = 6. So B. 18. Anything over 1 is itself, so 4/1 = 4. A. 19. 6+8 = 14 people like pizza/hamburgers. 3+5 =8 people like spaghetti/tacos. 14-8 = 6. D.