Zhang lei tracked the size of the bear population in a nature reserve. the first year, there were 1000 bears. sadly, the population lost 10% of its size each year. let f(n) be the number of bears in the reserve in the nth year since zhang lei started tracking it. f is a sequence. what kind? f(1)= f(n)= f(n-1) */+

A geometric sequence

Step-by-step explanation:

A geometric sequence is a sequence one in which each next term is found by multiplying the previous term by a constant.

In our case, we are facing a 10% population loss every year, which means to find the bear population next year when have to multiply the population of the previous year by 0.9; thus, we a multiplying the previous term by a constant to get the next term: this is a geometric sequence.

The first term of this geometric series is the bear population in the first year, which is 1000; thus,

and for the nth term :

.

step-by-step explanation:

x = -2

y = 848

step-by-step explanation:

plug in the numbers