A function is said to have a horizontal asymptote if either the limit at infinity exists or the limit at negative infinity exists. Show that each of the following functions has a horizontal asymptote by calculating the given limit. - 41 lim I-+ 00 2+ 2 121 - 14 lim 13 + 3x - 13 12 - 21 - 3 lim I:} 00 7 - 1212 lim I } 00 13 - 13x lim I } 13 - 13r Submit