For this case, the first thing we should do is observe that we have a linear equation.
Therefore, we have a sequence of the form:
[tex] an = k * n
[/tex]
Where, k: is the slope of the line.
We have then:
[tex] k = (an2 - an1) / (n2 - n1)
k = (42 - 21) / (2 - 1)
k = (21) / (1)
k = 21[/tex]
Substituting we have:
[tex] an = 21 * n
[/tex]
Answer:
An explicit formula for the sequence of the number of bacterium is:
an = 21 * n
option 1
