64 dollars is the tax, the total cost would be $864.
Use this for percentages.
https://percentagecalculator.net/
<span>f(x) = -6x +6
to find inverse
x = -6y + 6
6y = 6 - x
y = 1 - x/6
Answer
</span>f^–1(x)= 1 - x/6
The percentage of solution o after distillation 36%
There were 160 athletes at the meet.
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