how is the lim as x heads towards infinity of 3/(1+(3/x) equal to 3?
You could use an intuitive approach.
As x becomes larger and larger, the expression
3/x approaches zero.
so your fraction approaches 3/(1 + 0) = 3
As x becomes larger and larger, the expression
3/x approaches zero.
so your fraction approaches 3/(1 + 0) = 3