SAT Mathematics Practice Test 2

A botanist is cultivating a rare species of plant in a controlled environment and currently has 3000 of these plants. The population of this species that the botanist expects to grow next year, Nnext year, can be estimated from the number of plants this year, N this year, by the equation below.

Nnext‌year=Nthis‌year+0.2(Nthis‌year)(1−

Nthis‌year

K

)

The constant K in this formula is the number of plants the environment is able to support.