Opposite reciprocal slope lines or parallel or perpendicular

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Which choice represents the sample space ,s for this event

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut