Area=lenght times widht
area/length=width
(4x²+12x)/(4x)=width
we can factor out the 4x
4x²+12x=4x(x+3)
so the width is x+3
Total number of animals: 40
Types of animals: 4
Adult goats: x
Adult rabbits: 2x
Child goats: 3x
Child rabbits: 2x
x+2x+3x+2x = 40
8x = 40
x = 5
There are 5 adult goats.
The correct answer is 5 adult goats.
