You can put this solution on YOUR website! y=60x/(1+0.625x)
as x increases to infinity, positive or negative, the denominator becomes 0.625x for all practical purposes, since the addition of 1 does not change anything significantly. The sign of the numerator and the denominator will be + or -.
y=60x/0.625x
y=60(5/8)
y=96, horizontal asymptote.