Simplified form of square root of 72

What is the equation of the following graph in vertex form? parabolic function going down from the left through the point zero comma twelve and through the point two comma zero and turning at the point four comma negative four and going up through the point six comma zero and continuing towards infinity courtesy of texas instruments a: y = (x − 4)2 − 4 b: y = (x + 4)2 − 4 c: y = (x + 2)2 + 6 d: y = (x + 2)2 + 12

Write the sentence as an equation. 6 fewer than the quantity 140 times j equals 104

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?