A species of dolphins is decreasing at a rate of 3.1% per year. If there are currently 20,000 dolphins, how many will there be in 30 years?

Step-by-step explanation:

The dolphin species decreasing rate per year = 3.1 %

The number of dolphins present currently = 20,000

The number of dolphins available after 30 years = ??

By population depreciation formula,

where Pn is the population after 30 years,

P is the current population

R is the decreasing rate per year

T is the time after n years, in this case 30

=

= 7775.76 = 7776.

u rich

step-by-step explanation:

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