About 20 minutes after drinking a cup of coffee, a person has 200 milligrams (mg) of coffee in the bloodstream. Caffeine in the bloodstream is metabolized at a rate r ( t ) milligrams per hour, where t is the number of hours since the caffeine level was 200 milligrams. Choose the expression that gives the level of caffeine in the bloodstream after 4 hours.

she drove 134 miles

step-by-step explanation:

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation:

51840000 cm 2

step-by-step explanation:

what are you doing do you need examples of variable questions?

step-by-step explanation:

5a-1=9               bring the one over the =

5a=10                     divide by your variable

a=2

brainliest? ?

here try this one

3a-24=0