4. One bucket starts at noon with two liters of water, and water is gradually leaking out at a rate of 3/1000 liters per minute. A second bucket starts at noon with three liters of water, but water is leaking out at a faster rate of 9/1000 liters per minute. When will the two buckets have the same amount of water?

College Algebra
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ISBN:9781337282291
Author:Ron Larson
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Chapter5: Exponential And Logarithmic Functions
Section5.5: Exponential And Logarithmic Models
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4. One bucket starts at noon with two liters of water, and water is gradually leaking out
at a rate of 3/1000 liters per minute. A second bucket starts at noon with three liters of
water, but water is leaking out at a faster rate of 9/1000 liters per minute. When will the
two buckets have the same amount of water?
5. The amount of a radioactive substance A is an exponential function of time t. Every 20
minutes, the amount of the substance decreases by exactly 2.8%, and at time t = 0 minutes,
there are 100 milligrams of the substance.
( So at time t = 20, there will be exactly 97.2 milligrams of the substance )
(a) Find an equation showing how A depends on t
(b) By what percentage will the amount of the substance decrease from t = 0 to t = 200
minutes ?
(c) At what time will there be only 1 milligram of the substance ?
6. Suppose the following limit information is known about a function F:
lim F(x) = -T/2
lim F(x) :
lim (F(x) – 3x) = 0
= -0
%3D
x -00
x→-2+
x 00
According to the information, write down equations of asymptotes to the graph of F.
Transcribed Image Text:4. One bucket starts at noon with two liters of water, and water is gradually leaking out at a rate of 3/1000 liters per minute. A second bucket starts at noon with three liters of water, but water is leaking out at a faster rate of 9/1000 liters per minute. When will the two buckets have the same amount of water? 5. The amount of a radioactive substance A is an exponential function of time t. Every 20 minutes, the amount of the substance decreases by exactly 2.8%, and at time t = 0 minutes, there are 100 milligrams of the substance. ( So at time t = 20, there will be exactly 97.2 milligrams of the substance ) (a) Find an equation showing how A depends on t (b) By what percentage will the amount of the substance decrease from t = 0 to t = 200 minutes ? (c) At what time will there be only 1 milligram of the substance ? 6. Suppose the following limit information is known about a function F: lim F(x) = -T/2 lim F(x) : lim (F(x) – 3x) = 0 = -0 %3D x -00 x→-2+ x 00 According to the information, write down equations of asymptotes to the graph of F.
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