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3 years ago

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Grace earns $7 for each car she washes. She always saves $25 of her weekly earnings. This week, she wants to have at least $65 i

n spending money. How many cars must she wash? Write and solve the inequality to represent this situation. Interpret the solution in context.

1 answer:

mars1129 [50]3 years ago

3 0

7c - 25 ≥ 65 is the answer.

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If it’s 25% of 200,00= $50,000 is what she gets

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$D)(x+10)^2+(y+4)^2=5^2=25$

Explanation

Step 1

We know that the general equation for a circle is

$\begin{gathered} (x-h)^2+(y-k)^2=r^2 \\ \end{gathered}$

where

(h,k) is the center of the circel

and r is the radius

then, all we need to do is replace

Let

$\begin{gathered} \text{center}\Rightarrow(h,k)\Rightarrow(-10,-4) \\ \text{radius}\Rightarrow r\Rightarrow5 \end{gathered}$

replace the values

$\begin{gathered} (x-h)^2+(y-k)^2=r^2 \\ (x-(-10))^2+(y-(-4))^2=5^2 \\ (x+10)^2+(y+4)^2=5^2=25 \end{gathered}$

therefore, the answer is

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I hope this helps you

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