Answer:
$3.99 per watermelon
Step-by-step explanation:
$39.90 total paid divided by 10 watermelons is $3.99
I didn't get to finishing the problem (I just got distracted from my exams lol) but here are the equations for each of the people, if it helps.
S=-6L-2n+198
L=-.25n+33
N=-3.2727L+118.8
Sorry I couldn't be of more help!
-8(9)= -72; -4(-6)= 24; -72+24= -48