Question

The number of bacteria in a colony, B, after t hours is B = a · 2t, where a is the number of bacteria in the colony at t = 0. If the value of a quadruples, how does this affect the value of B at time t?

Answer 1

Is the equation in exponent form ?
\(B(t)=a(2^t)\)

Answer 2

Increases by a factor of 2





Increases by a factor of 4





Decreases by a factor of 4





Decreases by a factor of sqr rt of 2

Answer 3

I am trying to confirm the equation, the t is the exponent of 2, and not multiplied.
@.WhiteDragon.

Answer 4

??

Answer 5

This is what you posted : B = a · 2t
I suspect that it should read: \(B(t)=a~2^t\), i.e. the t should be an exponent.
Can you check if there was a typo?

Answer 6

increases by a factor of 4.