The quantity of a drug,Q

mg, present in the bodyt

hours after an injection of the drug is given is

Q=f(t)=120te^-0.5t.

Findf(1), f(1), f(4),andf(4).

Give units and interpret the answers.

Round your answers to two decimal places.

f(1)=

f(1)=

f(4)=

f(4)=

Interpretation off(1)andf(1):

One hour after the drug was administered, the quantity of drug in the body is approximately

a.f ' (1) mg and the quantity is decreasing at a rate of |f (1)| mg per hour.

b. f ' (1) mg and the quantity is increasing at a rate of |f (1)| mg per hour.

c. f (1) mg and the quantity is decreasing at a rate of |f ' (1)| mg per hour.

d. f (1) mg and the quantity is increasing at a rate of |f ' (1)| mg per hour.

Interpretation of f(4)andf(4):

Fourhours after the drug was administered, the quantity of drug in the body is approximately

a.f (4) mg and the quantity is decreasing at a rate of |f ' (4)| mg per hour.

b. f ' (4) mg and the quantity is decreasing at a rate of |f (4)| mg per hour.

c. f (4) mg and the quantity is increasing at a rate of |f ' (4)| mg per hour.

d. f ' (4) mg and the quantity is increasing at a rate of |f (4)| mg per hour.