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

A.) 0.5

B.) 1

C.) 2

D.) 280

Question

Mathematics

Taniya Brock

11 August, 19:54

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

A.) 0.5

B.) 1

C.) 2

D.) 280

+3

Answers (1)

Know the Answer?

Elianna · Answer 1

The answer is C.) 2

The general form of formula is

y = a • r^x

y - the total number of bacteria after x period of time

a - the initial number of bacteria

r - growth rate

x - period of time

Let's compare:

y = a • r^x

y = 280 • 2^x

Since r = 2, the growth rate is C.) 2

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

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

A.) 0.5

B.) 1

C.) 2

D.) 280