According to the CIA’s World Fact Boo k in 2010, the population of the United Stales was approximately 310 million with a 0.97 % annual growth rate. At this rate, the population P t (in millions) can be approximated by P t = 310 1.0097 t , where t is the time in years since 2010. a. Is the graph of P an increasing or decreasing exponential function? b. Evaluate P 0 and interpret its meaning in the context of this problem. c. Evaluate P 10 and interpret its meaning in the context of this problem Round the population value to the nearest million. d. Evaluate P 20 and P 30 . e. Evaluate P 200 and use this result to determine if it is reasonable to expect this model to continue indeiritely.
According to the CIA’s World Fact Boo k in 2010, the population of the United Stales was approximately 310 million with a 0.97 % annual growth rate. At this rate, the population P t (in millions) can be approximated by P t = 310 1.0097 t , where t is the time in years since 2010. a. Is the graph of P an increasing or decreasing exponential function? b. Evaluate P 0 and interpret its meaning in the context of this problem. c. Evaluate P 10 and interpret its meaning in the context of this problem Round the population value to the nearest million. d. Evaluate P 20 and P 30 . e. Evaluate P 200 and use this result to determine if it is reasonable to expect this model to continue indeiritely.
According to the CIA’s World Fact Book in 2010, the population of the United Stales was approximately 310 million with a
0.97
%
annual growth rate. At this rate, the population
P
t
(in millions) can be approximated by
P
t
=
310
1.0097
t
,
where t is the time in years since 2010.
a. Is the graph of P an increasing or decreasing exponential function?
b. Evaluate
P
0
and interpret its meaning in the context of this problem.
c. Evaluate
P
10
and interpret its meaning in the context of this problem Round the population value to the nearest million.
d. Evaluate
P
20
and
P
30
.
e. Evaluate
P
200
and use this result to determine if it is reasonable to expect this model to continue indeiritely.
A 20 foot ladder rests on level ground; its head (top) is against a vertical wall. The bottom of the ladder begins by being 12 feet from the wall but begins moving away at the rate of 0.1 feet per second. At what rate is the top of the ladder slipping down the wall? You may use a calculator.
Explain the focus and reasons for establishment of 12.4.1(root test) and 12.4.2(ratio test)
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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