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Answer
Yes, Kiki went over her $50 budget by $13.92
No, Kiki would not have gone over budget if she had only brought 1 friend.
Explanation
3.24x3=9.72 total $ spent on bus tickets
10.36x3=31.05 total $ spent on movie tickets
5.27x3=15.81 15.81+7.34=23.15 total $ spent on popcorn and drinks
9.72+31.05+23.15=63.92 total $ spent
63.92-50=13.92 amount she went over her budget
If Kiki only brought 1 friend
3.24x2=6.48 total $ spend on bus tickets
10.36x2=20.72 total $ spent on movie tickets
5.72x2=11.44 11.44+7.34=18.78 total $ spent on popcorn and drinks
6.48+20.72+18.78=45.98 total $ spent
hope this helps!
have a great day :)