we're supposed to correct the factored expression: any help would be totally appreciated :-)

Solve with work both bert and ernie received an increase in their weekly salaries. bert's salary increased from $520 to $520. ernie's salary went from $580 to $645. find the percent of increase for each salary. what was the larger of the two percents ?

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

What is x and y intercepts for y=x+7