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In each of the following problems, find an exponential function of the form
Personal Consumption Expenditures Thetotal amount of expenditures in the United States on video and audio equipment, computers, and related services was approximately $9.6 billion in 1990 and $109.2 billion in 2015. (Data from: The Federal Reserve Bank of St. Louis.)
Let
According to the model, what were the expenditures in 2014?
If the model remains accurate, estimate the expenditures for 2020.
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Chapter 4 Solutions
MATH W/APPLICAT.W/NOTES GDE +ACCESS CODE
- not use ai pleasearrow_forwardWas ist eine Transormation im Bezug zum Thema Trigonometrie?arrow_forward4. Suppose that the population of a certain collection of rare Brazilian ants is given by P(t)=(t+100) In(t+2), Where t represents the time in days. Find and interpret the rates of change of the population on the third day and on the tenth day.arrow_forward
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- 3. Find the derivative of each function. Label with appropriate derivative notation showing both dependent and independent variables. f(t)=4t(2t⭑+4)³ a. f(t)=4t (2t+4)³ (Answer must be factored.) b. y= 3 1 (2x³-4) 6arrow_forward4.3 The Chain Rule 1. {Algebra review} Let f(x)=2x²-5 x and g(x)=6x+2. Find f[g(−5)]. 2. {Algebra review} Write h(x)=√√8x-3 as the composite of two functions f(x) and g(x). (There may be more than one way to do this.)arrow_forward4.4 Derivatives of Exponential Functions 1. Find derivatives of the functions defined as follows. a. g(t)=-3.4e b. y=e√x c. f(x)=(4x³+2)e³* d. y=- x²arrow_forward
- 4.5 Derivatives of Logarithmic Functions 1. Find the derivative of each function. a) y=ln (-3x) b) f(u)=nu c) 9(x)=x-1 lnxarrow_forward3. If the total revenue received from the sale of x items is given by R(x)=30ln (2x+1), While the total cost to produce x items is C(x)=✗, find the following. a) The marginal revenue b) The profit function P(x) (Hint: P(x)=R(x)-C(x)} c) The marginal profit when x=20 d) Interpret the results of part c).arrow_forward2. The sales of a new personal computer (in thousands) are given by S(t)=100-90€-04: Where t represents time in years. Find and interpret the rate of change of sales at each time. a) After 1 year b) After 5 years c) What is happening to the rate of change of sales as time goes on? d) Does the rate of change of sales ever equal zero?arrow_forward
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