Brett has been studying a type of bacteria that doubles every month. Originally, there were 5 bacterial cells. He wants to know how many there will be after 42 months. Which equation should he use?

A a42 = 5 (2) 42 - 1

B a42 = 5 (2) (42)

C a42 = 5 (2) 42

D a42 = 5 (2) (42 - 1)

Question

Biology

Macey Middleton

16 September, 17:39

Brett has been studying a type of bacteria that doubles every month. Originally, there were 5 bacterial cells. He wants to know how many there will be after 42 months. Which equation should he use?

A a42 = 5 (2) 42 - 1

B a42 = 5 (2) (42)

C a42 = 5 (2) 42

D a42 = 5 (2) (42 - 1)

+5

Answers (1)

Know the Answer?

Julissa Forbes · Answer 1

Originally, there were only five bacterial cells. After one month, the amount of bacteria is doubled with ten bacteria. The growth is represented by the formula:

a42 = 5 x 2^1

After 42 months, the growth can be solved using this formula:

a42 = 5 x 2^42

Brett has been studying a type of bacteria that doubles every month. Originally, there were 5 bacterial cells. He wants to know how many there will be after 42 months. Which equation should he use?A a42 = 5 (2) 42 - 1B a42 = 5 (2) (42)C a42 = 5 (2) 42D a42 = 5 (2) (42 - 1)

Brett has been studying a type of bacteria that doubles every month. Originally, there were 5 bacterial cells. He wants to know how many there will be after 42 months. Which equation should he use?

A a42 = 5 (2) 42 - 1

B a42 = 5 (2) (42)

C a42 = 5 (2) 42

D a42 = 5 (2) (42 - 1)