Question

question 8 of 8
a particular drug is metabolized by the body at the rate of 8 milligrams every 2 hours. which expression best describes the rate at which the body handles this particular drug?
1 -8 ÷ 2
2 2 ÷ -8
3 -8 x 2
4 8 x (-2)

Explanation:

Step1: Define rate concept

Rate is amount per unit - time. Here, amount of drug metabolized is 8 milligrams (negative as it's being used up) in 2 hours.
The rate formula is $\text{Rate}=\frac{\text{Amount}}{\text{Time}}$.

Step2: Substitute values

Substitute amount = - 8 milligrams and time = 2 hours into the rate formula. We get $\text{Rate}=\frac{-8}{2}=-8\div2$.

Answer:

1. $-8\div2$