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)
. The amount of TIME spent driving (which depends on the SPEED of the car) is 5 hours. means time(speed) = 5. TIME and SPEED are your key words and 5 is the key number.