Two eagles fly directly toward one another, the first at $15$ m$/$s and the second at $18$ m$/$s$.$ Both screech, the first one emitting a frequency of $3050$ Hz and the second one emitting a frequency of $3950$ Hz$.$

What frequency of sound, in hertz, does the first eagle hear from the second if the speed of sound is $330$ m$/$s$?$

What frequency of sound, in hertz, does the second eagle hear from the first if the speed of sound is $330$ m$/$s$?$