Please help I’m stuck

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]

Ineed no it anyone can see this

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2