Swine flu is attacking porkopolis. the function. S(t) = 9t - 4 determines how many people have swine where t = time in days and S = number of people in thousands.. . find S(4), what does S(4) mean?. . Find t when S(t) = 23, what does S(t) = 23 mean?. . Graph the function, coordinates.

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13-07-2016
Mathematics

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Swine flu is attacking porkopolis. the function. S(t) = 9t - 4 determines how many people have swine where t = time in days and S = number of people in thousands.. . find S(4), what does S(4) mean?. . Find t when S(t) = 23, what does S(t) = 23 mean?. . Graph the function, coordinates.

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W0lf93 W0lf93 · Answer 1 · 2017-07-14T13:21:13+02:00

the answer: the interpreted function is S(t) =9t-4, t = time in days, and S = number of people in thousands. The question consists of finding the value of S(4) and its meaning; for that, we replace the value of t by 4, in the equation S(t) = 9t -4, that is S(4) = 9*4-4=36-4=32, S(4) =32, in every four hours, 32 thousands people is attacked by swine flu. To find the value of t, when S(t)= 23, we have 9t-4 = 23, and then 9t= 23+4=27, t =27 / 9 = 3 so t = 3. S(t) = 23 does mean the value of time when 23 thousands of people is attacked by flu.