Figure 1.18 shows the percent of the side of the moon
Chapter , Problem 1.2.17(choose chapter or problem)
Figure 1.18 shows the percent of the side of the moon toward the earth illuminated by the sun at different times during the year 2008. Use the figure to answer the following questions. (a) Give the coordinates of the points , , , , . (b) Plot the point = (15, 60) and = (60, 15). Which point is on the graph? (c) During which time intervals is the function increasing? (d) During which time intervals is the function decreasing? 10 30 50 70 90 10 20 30 40 50 60 70 80 90 100 day of the year (2008) % of face of moon toward earth illuminated Figure 1.18: Moon phases
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