Acertain culture of yeast increases by 50% every three hours. a scientist places 9 grams of the yeast in a culture dish. write the explicit and recursive formulas for the geometric sequence formed by the growth of the yeast

Explicit:  

Recursive:  

Step-by-step explanation:

A certain culture of yeast increases by 50% every three hours

⇒ rate (r) is  

A scientist places 9 grams of the yeast in a culture dish.

⇒ first term of the sequence (a₁) = 9

The explicit rule for a geometric sequence is:

⇒

The recursive rule for a geometric sequence is:

⇒

answer:   n ≤ -3 or n < -5

step-by-step explanation:

-5 + 2n ≥ -11

+5             +5

2n ≥ -6

2/2 ≤ -6/2

n ≤ -3

-6 - 10n > 44

+6           +6

-10n > 50

-10/-10 50/-10

n < -5

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step-by-step explanation: