Question

A scientist started with a sample of 8 cells. The sample increased as shown in the table.

Assume that the pattern in the table continues. Which equation can be solved for t, the time in hours when the number of cells will reach 100,000?

A
8⋅t4=100,000

B
8⋅4t=100,000

C
4⋅t8=100,000

D
4⋅8t=100,000

Answer 1

B

8 ⋅ 4^t = 100,000

Explanation:

Answer 2

100000 = 8 (4) ^t

Explanation:

We are multiplying by 4 each time

y = a (4)^t

The initial amount is 8

y = 8 (4)^t

We want to get to 100000

100000 = 8 (4) ^t