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kherson [118]
3 years ago
11

A class voted for either rollerblading, swimming, or biking as their favorite summer activity. If swimming got 42% percent of th

e vote and biking got 19%, what percentage of the class voted for rollerblading?
Mathematics
1 answer:
Nina [5.8K]3 years ago
3 0
I dont know i wish i did
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Correct answer is option D.

The solution is listed below

F(x)=4x+7 \\  \\ 
y=4x+7 \\  \\ 
y-7=4x \\  \\ 
 \frac{y-7}{4}=x \\  \\ 
 x= \frac{y-7}{4} \\  \\ 
f-^{1}(y) = \frac{y-7}{4} \\  \\ 
f-^{1}(x) = \frac{x-7}{4} \\  \\ 

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