What is the value of 2x3squared +x2squared when x = 3

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

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two