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Neko [114]
3 years ago
7

The monthly demand for a certain brand of perfume is given by the demand equation p = 100e−0.0002x + 125 where p denotes the ret

ail unit price (in dollars) and x denotes the quantity (in 1-oz bottles) demanded.
(a) Find the rate of change of the price per bottle when x = 2000 and when x = 3000. (Round your answers to four decimal places.)

x = 2000( ) dollars/bottle

x = 3000( ) dollars/bottle

(b) What is the price per bottle when x = 2000? When x = 3000? (Round your answers to the nearest cent.)

x = 2000 $ ( )

x = 3000 $ ( )
Mathematics
1 answer:
Fantom [35]3 years ago
3 0

Answer:

a)

Rate of change of the price per bottle when x = 2000

p'(2000)= -0.0134

Rate of change of the price per bottle when x = 3000

p'(3000)= -0.011

b)

Price per bottle when x = 2000

$192

Price per bottle when x = 3000

$180

Step-by-step explanation:

The equation of the demand x in terms of the price p is

\bf p(x)=100e^{-0.0002x}+125

(a) Find the rate of change of the price per bottle when x = 2000 and when x = 3000. (Round your answers to four decimal places.)

These are p'(x) at x=2000 and x=3000

\bf p'(x)=100(-0.0002)e^{-0.0002x}=-0.02e^{-0.0002x}

so

\bf p'(2000)=-0.02e^{-0.0002*2000}=-0.02e^{-0.4}=-0.0134

\bf p'(3000)=-0.02e^{-0.0002*3000}=-0.02e^{-0.6}=-0.011

(b) What is the price per bottle when x = 2000? When x = 3000? (Round your answers to the nearest cent.)

These are p(2000) and p(3000)

\bf p(2000)=100e^{-0.0002*2000}+125=100e^{-0.4}+125\approx 192

\bf p(3000)=100e^{-0.0002*3000}+125=100e^{-0.6}+125\approx 180

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