Apatient receives a 150-mg injection of a drug every 4 hrs. the graph shows the amnt f(t) of he drug in the blood steam after t hours. find lim of f(t) as t approaches to 12(left) and 12(right)m and explain the significance of these one-sided limits.

So based on your question where as ask to find the lim of the function f(t) as t approaches to 12 to left and 12 to the right and explain the significance of these sided limit. Based on a step by step procedures i came up with an answer that the limit from the left is 150. The limit from the right is 300. The significance is that the limits from the left show the medicine in the blood left and the limit from the right shows how much medicine the patient has in the blood after another dose

Aand b are correctly balanced reactions. they have the same number of atoms in both sides of the reaction