A species of dolphins is decreasing at a rate of 3.1% per year. if there are currently 20000 dolphins , many will there be in 30 years

7892 dolphins

Step-by-step explanation:

let P denote the dolphin population.

-Notice this is an exponential decay and is denoted as:

Where;

#Given t=30yrs, =20000 and r=3.1%, the population after 30 years is estimated as:

Hence, the dolphin population after 30yrs is approximately 7892

d

step-by-step explanation:

d