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3 years ago

11

Bella bought a small smoothie at the Point Coffee Shop and gave the barista a 10% tip. She spent 2.75 in all. How much did the s

moothie cost before the tip?

1 answer:

I am Lyosha [343]3 years ago

7 0

She spent $2.50 (before the tip) ;)

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Answer:

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Step-by-step explanation:

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$\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)= x^3-x \qquad 
\begin{cases}
x_1=1\\
x_2=5
\end{cases}\implies \cfrac{f(5)-f(1)}{5-1}
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