The concentration of a drug in an organ at any time t (in seconds) is given by C(t) =
0.25 - 15(1 - e-t/60) if Osts 20
15e-t/60 - 10e-(t - 20)/60 if t > 20
where C(t) is measured in milligrams per cubic centimeter (mg/cm3).
(a) What is the initial concentration of the drug in the organ?
0
mg/cm3
(b) What is the concentration of the drug in the organ after 10 sec? (Round your answer to three decimal places.)
mg/cm
the organ after 26 sec? (Round your answer to three decimal places.)
(c) What is the concentration of the drug
mg/cm3

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%

a

step-by-step explanation:

the denominator cannot be the same as one of the factors.

8 denominator times 2 denominator = 16

and 7 numerator time 11 = 77

77/16= 77/16 ( they cannot be further simplified)