Question

The expression 3 ( 1 . 5 )^ t models the number of bacteria in a culture as a function of the number of hours since the culture was created.

What does 3 represent in this expression?

A- There were initially 3 bacteria in the culture.

B- The culture was created 3 hours ago.

C-The number of bacteria is multiplied by 3 each hour.

Answer 1

A

Explanation:

Given

3
`(1.5)^(t)`

When the culture was created t = 0, thus

3
`(1.5)^(0)` = 3 × 1 = 3

That is there were initially 3 bacteria in the culture → A