(Solved): (a) Write a formula for the function produced when f is stretched by a factor of 4 and then shifted ...

(a) Write a formula for the function produced when $f$ is stretched by a factor of 4 and then shifted up by 2 units. $y=$ Call this new tunction $F$ and sketch its graph. (b) What funetion do you get if you reverse the order of the two operations in part (a) and fint sift $f$ up by 2 and then stretch it up by a factor of a units? $y=$