Find where your inputs make sense. For the first problem it asks to find the input of f(1), the second constraint would be correct because 1 is less than for 4 and negative 2. Then you would plug in your values. So -3(1)=-3 The second one fits the constraints of the first so plug it in for 2x-3. You would get 2(-4)-3, which equals -11 For the last one find what value corresponds to the input value of 6 and then plug it in. 6/6 -1 =0 Hope this helped you understand.
