Linear Models
Lukas has already researched 8 animals in school. He will research 2 new animals per week.
This means the first week he will research 8 + 2 = 10 animals
The second week he will research 8 + 2*2 = 12 animals
The third week he will research 8 + 2*3 = 14 animals
The fourth week he will research 8 + 2*4 = 16 animals
The fifth week he will research 8 + 2*5 = 18 animals
The sixth week he will research 8 + 2*6 = 20 animals
The seventh week he will research 8 + 2*7 = 22 animals