Question

Peter's chickens got the bird flu and he is rying to stop the epidemic. He knows that the function
f(t) = 300 / ( 15 - 20e^(-0.07t) )
describes the number of his chickens who are sick t weeks after the initial outbreak.

(a) How many chickens became sick when the flu epidemic has began?

I got -60 for my answer, which doesn't seem right

(b) In how many weeks will 100 chickens be sick?

i got roughly 7.3 weeks

(c) What is the maximum number of chickens that will become ill?

Answer 1

try asking just 1 question at a time

Answer 2

okay, well

How many chickens became sick when the flu epidemic has began?

Answer 3

would t be 0 or 1? I dunno

Answer 4

well when i put in 0 i got -60 for my answer. which did not make sense

Answer 5

and when i put 1, i got -82

Answer 6

eh. when did the epidemic begin?

Answer 7

the question never states it

Answer 8

how'd you figure out a???

Answer 9

haha, i can't figure it out. that's the point. i just assumed t would be 0, and when i plugged that in, i got a negative number

Answer 10

uhm dont worry about it. our prof just told us we don't have to do part a. could you maybe help me with part c?

Answer 11

eh...this doesn't look parabolic...is it? i ahvent done the math myself.

Answer 12

but if it is, then it is at the midpoint

Answer 13

well the prof said to not do part a

Answer 14

oh, talking about c there. I think a is 0...

Answer 15

..unless the 'parabola' has shifted...

Answer 16

it's okay, we don't need to wrry about it

Answer 17

for part c, i find the derivative and set it to 0 right?

Answer 18

lol i forgot all about derivatives... yes.

Answer 19

wait..is it the first or second derivative?

Answer 20

that u should use?

Answer 21

hey..you're doing calculus! you know of purplemath.com, calculushelp.com and khanacademy.org right?