Chapter 5: Problem 46
Convert to an exponential equation. \(t=\log _{4} 7\)
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Chapter 5: Problem 46
Convert to an exponential equation. \(t=\log _{4} 7\)
These are the key concepts you need to understand to accurately answer the question.
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Increasing CPU Power The central processing unit (CPU) power in computers has increased significantly over the years. The CPU power in Macintosh computers has grown exponentially from 8 MHz in 1984 to \(3400 \mathrm{MHz}\) in 2013 (Source: Apple). The exponential function $$ M(t)=7.91477(1.26698)^{t} $$ where \(t\) is the number of years after \(1984,\) can be used to estimate the CPU power in a Macintosh computer in a given year. Find the CPU power of a Macintosh Performa \(5320 \mathrm{CD}\) in 1995 and of an iMac G6 in \(2009 .\) Round to the nearest one MHz.
Salvage Value. \(\quad\) A restaurant purchased a 72 -in. range with six burners for \(\$ 6982 .\) The value of the range each year is \(85 \%\) of the value of the preceding year. After \(t\) years, its value, in dollars, is given by the exponential function \(V(t)=6982(0.85)^{t}\) a) Graph the function. b) Find the value of the range after \(0,1,2,5,\) and 8 years. c) The restaurant decides to replace the range when its value has declined to \(\$ 1000 .\) After how long will the range be replaced?
In Exercises \(77-80\) : a) Find the vertex. b) Find the axis of symmetry. c) Determine whether there is a maximum or a minimum value and find that value.[ 3.3] $$f(x)=-x^{2}+6 x-8$$
Approximate the point \((s)\) of intersection of the pair of equations. $$y=2.3 \ln (x+10.7), y=10 e^{-0.007 x^{2}}$$
Solve using any method. $$x^{\log x}=\frac{x^{3}}{100}$$
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