What's the answer for this equation 1/3(y+7)=3(y−1)

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

tube or goog would be a great resource to with that question

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225