A doctor prescribes a 300-mg antibiotic tablet to be taken every eight hours. Just before each tablet is taken, 20% of the drug remains in the body. (a) How much of the drug is in the body just after the second tablet is taken? After the third tablet?

So after the second  tablet there is 360-mg of drug in the body.

So after the third  tablet there is 372-mg of drug in the body.

Step-by-step explanation:

We know that a  doctor prescribes a 300-mg antibiotic tablet to be taken every eight hours. Just before each tablet is taken, 20% of the drug remains in the body.

We know that  20%=0.2.

We conclude that after the first pill, 300mg of the  drug is in the body.

We have the following formula, to calculate how much mg of the drug is in the body after the second tablet:

So after the second  tablet there is 360-mg of drug in the body.

We have the following formula, to calculate how much mg of the drug is in the body after the third tablet:

So after the third  tablet there is 372-mg of drug in the body.

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation:

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.