Solve these algebraic expression and make it them into one simplified expression (There are two parts)

Let the closed interval [a , b] be the domain of function f. the domain of f(x - 3) is given by (a) the open interval (a , b) (b) the closed interval [a , b] (c) the closed interval [a - 3 , b - 3] (d) the closed interval [a + 3 , b + 3]

Find the values of y: 3y^3(y^2+ 2/3y)=0

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8