Question

Swine Flu is attacking Springfield. The function below determines how many people have swine where t=time in days and S=the number of people in thousands.

Answer 1

`s(t)=9t-4`

A.find s(4)

`\begin{gathered} s(4)=9(4)-4 \\ s(4)=36-4 \\ s(4)=32 \end{gathered}`

B. means that in 4 days there will be 32000 infected people

C. find t to S(t)=23

`\begin{gathered} 23=9t-4 \\ 9t=23+4 \\ t=(27)/(9) \\ t=3 \end{gathered}`

D. means there will be 23,000 infected people after 3 days

E. Graph

to draw the line we need two points which we already have but we will add another to make a table of 3 values the new value is t=1

`\begin{gathered} s(1)=9(1)-4 \\ s(1)=5 \end{gathered}`

table

graph