Question in the image, please help

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Which of the following describes the graph of y--4x-36 compared to the parent square root function? stretched by a factor of 2, reflected over the x-axis, and translated 9 units right stretched by a factor of 2, reflected over the x-axis, and translated 9 units left stretched by a factor of 2, reflected over the y-axis, and translated 9 units right stretched by a factor of 2, reflected over the y-axis, and translated 9 units left save and exit next submit