First one
4sin (x - 3) [remember that a "-" shifts the function to the right ]
Second one
Look at this
4(1/2) sin (x) + 2 + 6 = 2sin (x) + 8
So....it is vertically stretched by a factor of 4 and shifted up 6 units
Third one
The number out front doesn't affect the shift up/down...it just changes the amplitude of the curve....the midline of the graph remains the same
The number added or subtracted to the function affects the shift up/down
So.....shifting this sine graph [and its midline ] up 4 units results in f(x) = 4 + sin (x)
Look at the graph here : https://www.desmos.com/calculator/gnp4zjdwvs