Dada la función f(x)=(x-1)/(x^2+2) hallar f(0), f(-1), f(2a)

F(0)= (0-1)/(0^2+2) = -0.5
f(-1)= (-1-1)/(-1^2+2)= -0.667

I'm pretty sure illustrators are often represented among the staff of an advertising agency   

Based off the appearance of the peppered moth, its markings would not be advantageous in a lush green ecosystem . this could cause their population to decrease as the camouflage factor would be somewhat useless and make them much more vulnerable to predators .hope this : )