Question 18 The following data represents the amount of medication still in someone's system after specific amounts of time. Time (hours) 0 3 6 9 12 15 Meds 500 255 129 66 33 15 (mg) What would a residual of -5 mean in context of this data? 2 pts O The person actually had 5 mg more of medication in the blood than estimated. O The person actually had 5 mg of medication in the blood. O After 5 hours the person had their blood tested for medication. O The person actually had 5 mg less of medication in the blood than estimated.