Mathematics: The table shows the daily amount that Ella spent on snacks. During which week did Ella spend a mean amount of $0.85 per day on snacks?

The table shows the daily amount that Ella spent

Ответ:

nyasiasaunders1234

13.05.2021

Mathematics

Its week 3

Step-by-step explanation:i did the math

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Ответ:

piperswatson2403

21.04.2021

Mathematics

$\bf \begin{array}{ccccccccc}
&&x_1&&y_1&&x_2&&y_2\\
% (a,b)
&&(~{{ 0}} &,&{{ 3}}~) 
% (c,d)
&&(~{{4}} &,&{{ 0}}~)
\end{array}
\\\\\\
% slope = m
slope = {{ m}}\implies 
\cfrac{\stackrel{rise}{{{ y_2}}-{{ y_1}}}}{\stackrel{run}{{{ x_2}}-{{ x_1}}}}\implies \cfrac{0-3}{4-0}\implies -\cfrac{3}{4}
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y-{{ y_1}}={{ m}}(x-{{ x_1}})}\implies y-3=-\cfrac{3}{4}(x-0)$

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The table shows the daily amount that Ella spent on snacks. During which week did Ella spend a mean amount of $0.85 per day on snacks?

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