Question

A wildlife refuge has 200 birds when it is first established. It is so

successful that the number of birds increases by 25% every year.
Write a function to model the situation.
Find the number of birds present after 7 years.

Answer 1

200*1.25ˣ

954

Explanation:

let x= years

200*1.25ˣ = birds

plug in 7 for x

200*1.25⁷=953.6743164

round to 954

Answer 2

550 birds

Explanation:

25% × 7 = 175%

100% + 175% = 275%

`(y)/(200) :(275)/(100)`

y × 100 = 275 × 200

100y = 55000

100y ÷ 100 = 55000 ÷ 100

y = 550