Sam Bought brushes for $8, a palette for $5, and oil paints for $15. He paid $29.82 in all. What sales tax rate did Sam play?
1 answer:
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Answer:
B
Step-by-step explanation:
So we have the formula:
And we want to solve it for r.
So, let's first divide both sides by π and h. This will cancel out the right side:
Now, take the square root of both sides:
And we're done!
Our answer is B.
I hope this helps!