Okay, here we have this:
Considering the provided information, we are going to calculate the requested amount of termites, so we obtain the following:
To do this, we will replace the doubling time in the following formula:
[tex]N(t)=N_02^{\frac{t}{T_d}}[/tex][tex]\begin{gathered} N(30)=(150)2^{\frac{30}{18}} \\ \approx476 \end{gathered}[/tex][tex]\begin{gathered} N(365)=(150)2^{\frac{365}{18}} \\ \approx190682402 \end{gathered}[/tex]Finally we obtain that:
a. After 1 month (30 days) will be approximately 476 termites.
b. After 1 year (365 days) will be approximately 190'682402 termites.