Question

Bacteria X has a growth rate of 190 % per hour. Some amount of bacteria X are accidentally introduced into some potato salad. Three hours after contamination, there were 45,000 bacteria X in the potato salad.

Find the initial number of bacteria X introduced into the potato salad:

bacteria

Estimate the number of bacteria in the food 4 hours after contamination.

bacteria

Answer 1

\[45,000=A(1.9)^3\] solve for \(A\)

Answer 2

as for part B, you know at hour 3 there are 45000 so at hour 4 there are
\[45000\times 1.9\]