3x/2 units to the right, so b).
It's not c) or d), because the -3x/2 is within the sin, rather than outside like y=sin(x)-3x/2
If it were shifted to the left, the equation would be y=sin(x+3x/2)
Your missing some of the enough so that i can answer this question. Once you input it I will be happy to do for you;)
20.90 is the correct answer