#12 4.07 questions Precalculus

Mathematics
Tutor: None Selected Time limit: 1 Day

May 14th, 2015

the solution is on the pic


May 14th, 2015

the solution is on the pic

sol.jpg 

let me know if there is something is not clear

May 14th, 2015

I don't why the bad rating is appear on my profile

May 14th, 2015

if you can change this, please change it !!

May 14th, 2015

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May 14th, 2015
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May 14th, 2015
Dec 8th, 2016
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