Question

The bacteria in an old piece of cheese is growing at a rate that can be modeled by y = 280 • 2x. Determine which number represents the growth rate.
0.5
1
2
280

Answer 1

Growth rate of bacteria is given by the following equation:-
$y = a. {r}^{x}$
where y is the final population, a is the initial population, r is the growth rate, and x is the time.

$given \: \: y = 280 \times {2}^{x}$
So initial population is 280, and growth rate is 2.

Hence, option C i.e. 2 is the final answer.

Answer 2

Answer:

C

Step-by-step explanation: