Reference no: EM132366516
Questions -
(1) A phone company charges for service according to the formula: C(n) = 21 + 0.08n, where n is the number of minutes talked, and C(n) is the monthly charge, in dollars.
a. What is the fixed charge, even if you do not talk on your phone?
b. How much are you charged for each minute of talk time (Rate of Change in total charges)?
c. What is the total charge, if you talked for 300 minutes on the phone?
(2) A town's population has been growing linearly. In 2003, the population was 45,000, and the population has been growing by 1,700 people each year.
a. Write an equation, P(t), for the population t years after 2003.
b. What is the rate of increase in population per year?
(3) What is the rate of change of the function in each of the tables below?
|
x
|
2
|
4
|
6
|
8
|
|
F(X)
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-4
|
16
|
36
|
56
|
|
x
|
0
|
5
|
10
|
15
|
|
g(x)
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5
|
-10
|
-25
|
-40
|
|
x
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0
|
5
|
10
|
15
|
|
w(x)
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-5
|
20
|
45
|
70
|
|
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