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Kryger [21]
3 years ago
8

Find the average rate of change over the given interval: f(x) = 3^x, [1, 4]

Mathematics
1 answer:
GREYUIT [131]3 years ago
3 0
\bf slope = m = \cfrac{rise}{run} \implies 
\cfrac{ f(x_2) - f(x_1)}{ x_2 - x_1}\impliedby 
\begin{array}{llll}
average~rate\\
of~change
\end{array}\\\\
-------------------------------\\\\
f(x)= 3^x  \qquad 
\stackrel{[1,4]}{\begin{cases}
x_1=1\\
x_2=4
\end{cases}}\implies \cfrac{f(4)-f(1)}{4-1}\implies \cfrac{3^4~-~3^1}{3}
\\\\\\
\cfrac{81-3}{3}\implies \cfrac{78}{3}\implies 26
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\qquad\qquad\huge\underline{{\sf Answer}}♨

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3 years ago
2x = 4y + 8, x - 2y = 4
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3 years ago
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leonid [27]

Answer:

84.9

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The weighted mean is given by the sum of the products of each grade by its respective weight. If the first four grades correspond to 15% of the final grade each, and the final exam is equivalent to 40% of the final grade, Michael's final grade is:

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3 years ago
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