Answered: D Learning Task 1 Simplify by writing…

Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN:9781305071742

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter4: Exponential And Logarithmic Functions

Section4.5: Exponential And Logarithmic Equations

Problem 7E

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Depreciation Once a new car is driven away from the dealer, it begins to lose value. Each year, a car loses 10% of its value. This means that each year the value of a car is 90% of the previous year’s value. If a new car was purchased for $20,000, the value at the end of the first year would be $20000(0.90) and the value of the car after the end of the second year would be $20000(0.90)2. Complete the table shown below. What will be the value of the car at the end of the eighth year? Simplify the expression, to show the value in dollars.
An Uncertain Investment Suppose you invested 1300 in the stock market two years ago. During the first year the value of the stock increased by 12%. During the second year, the value of the stock decreased by 12%. How much money is your investment worth at the end of the two-year period? Did you earn money or lose money? Note: The answer to the first question is not 1300
Compound Interest Use the formula A=P1+rnnt to calculate the balance A of an investment when P=$3000, r=6 and t=10years, and compounding is done (a) by the day, (b) by the hour, (c) by the minute, and (d) by the second. Does increasing the number of compoundings per year result in unlimited growth of the balance? Explain.

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D Learning Task 1 Simplify by writing in exponential form Write in expanded form 1. 2(2)(2)(2)(2)(2) 26 (2x)4 = (2x)(2x)(2x)(2x) 2. (3a)(3a)(3a)(3a) = (xy)7 3D 3. (-4)(-4)(-4)(-4)(-4) = (-ab)6 Exponents have its own rule in performing mathematical operations.