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Difficulty Level:

Easy

MCQ

After the last ice age began, the number of plant species in South America changed rapidly.

The relationship between the elapsed time, t{t}, in years, since the ice age began, and the total number of plant species, P(t){P}({t}), is modeled by the following function: P(t)=30,000,000P(t)=30,000,000. (89)t(\frac{8}{9})^{t}

Complete the following sentence about the yearly rate of change of the number of plant species.

Every year, the number of plant species shrinks by a factor of

Select all that apply :

89\frac{8}{9}

0.80.8

11

30,00000030,000000

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