m(t) = 15eāˆ’0.087t, where m(t) is measured in grams. After how many days is th

Algebra
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m(t) = 15eāˆ’0.087t,

 where 

m(t)

 is measured in grams. After how many days is there only 3 g remaining? (Round your answer to the nearest whole number.)
 days

Apr 14th, 2015

m(t) = 15eāˆ’0.087t =3

e-0.087t = 3/15 =0.2

t = ln(0.2)/(-0.087) = -1.60944/ (-0.087) =18.499=18.5 days=18 days or 19 days


Apr 14th, 2015

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