Expo Functions RETEST ΚΟΣ
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The graph shows the number of coffee stores after 1992.
Coffee Stores
a) Is this graph linear, quadratic or exponential?
How can you tell?
2,400
2,200
2,000
1,800
1,600
E
b) How many stores were open in 1992?
Number of Stores
Ø 1,400
1,200
1,000
800
600
400
2001
c) Which of the following equations might fit this data?
X
y = 400(1.25)
y = 400(0.75)
y = 1.25(400)
0 1 2 3 4 5 6 7 8 9 10
Number of Years Since 1992
1
2
3
4
5
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In new york city at the spring equinox there are 12 hours 8 minutes of daylight. the longest and shortest days of the year very by two hours and 53 minutes from the equinox in this year the equinox falls on march 21 in this task you use trigonometric function to model the hours of daylight hours on certain days of the year in new york city a.what is the independent and dependent variables? b.find the amplitude and the period of the function. c.create a trigonometric function that describes the hours of sunlight for each day of the year. d. graph the function you build in part c. e. use the function you build in part c to find out how many fewer daylight hours february 10 will have than march 21. you may look at the calendar.

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

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