If may cut a pie for two family's, one family with five people and the other family with four, but then two brothers took the pie and split it equally between them, how many would each brother get?

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the answer to the question is a  

it has the same slope and the same y-intercept.

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)