A certain type of cell can double itself every hour, because it has a growth factor of 2. A laboratory has 15 of these cells.

Which function best models the amount of cells in the laboratory after x hours?

f (x) = 2^x+15

f (x) = 15⋅2^x

f (x) = 2⋅15^x

f (x) = 15^x+2

Question

Nick

Mathematics

28 December, 10:58

A certain type of cell can double itself every hour, because it has a growth factor of 2. A laboratory has 15 of these cells.

Which function best models the amount of cells in the laboratory after x hours?

f (x) = 2^x+15

f (x) = 15⋅2^x

f (x) = 2⋅15^x

f (x) = 15^x+2

+5

Answers (1)

Know the Answer?

Brandon Bentley · Answer 1

Second one

Step-by-step explanation:

Second choice.

Second one is growing by a factor of 2 because the exponent on 2 tells me that 2 is is being repeated as a factor.

If x=0 then 15*2^0=15 (1) = 15 which is what we have initially.

A certain type of cell can double itself every hour, because it has a growth factor of 2. A laboratory has 15 of these cells.Which function best models the amount of cells in the laboratory after x hours?f (x) = 2^x+15f (x) = 15⋅2^xf (x) = 2⋅15^xf (x) = 15^x+2

A certain type of cell can double itself every hour, because it has a growth factor of 2. A laboratory has 15 of these cells.

Which function best models the amount of cells in the laboratory after x hours?

f (x) = 2^x+15

f (x) = 15⋅2^x

f (x) = 2⋅15^x

f (x) = 15^x+2