The table shows the monthly revenue y (in thousands of dollars) of a landscaping business for each month of the year 2016, with x = 1 representing January.
Month, x ______________ Revenue, y
1 ................................... 5.2
2 ................................... 5.6
3 ................................... 6.6
4 ................................... 8.3
5 ................................. 11.5
6 ................................. 15.8
7 ................................. 12.8
8 ................................. 10.1
9 ................................... 8.6
10 ................................. 6.9
11 ................................. 4.5
12 ................................. 2.7
A mathematical model that represents these data is

(a) Use a graphing utility to graph the model. What is the domain of each part of the piecewise defined function? How can you tell?
(b) Find f (5) and f (11) and interpret your results in the context of the problem.
(c) How do the values obtained from the model in part (b) compare with the actual data values?

Transcribed Image Text:

- 1.97x + 26.3 l0.505x2 – 1.47x + 6.3 %3D f(x) =