[Help on two 12th grade math: AP precalculus trig questions relating to phase shifts and graphs]

Hello, can anyone explain how I can solve these two trig questions? For the first one, you have to write the equation of the graph given that it's a sine function. For the 2nd one, you have to explain the relationship between the graphs of f(x) and g(x). I am specifically having a hard time coming up with the values to fill in the rest of the values for the first question's graph, and I don't understand how I can find the phase shift from f(x) to g(x) in the 2nd question. I have a test on them tomorrow, and I am really confused about them. Any help would be appreciated.  Thank you in advance.

2ND ONE

1ST ONE