Please help me with the math below

The function below is written in vertex form or intercept form. rewrite them in standard form and show your work. y = (x+4)(x+3)

3/8 of the students in ms. mull’s class ride the bus. if there are 24 students in the class, how many students ride the bus?

If you apply the changes below to the linear parent function .f(x)=x what is the equation of the new function ? vertically stretch by a factor of 3 ; flip over the x axis