Answer:
36
Step-by-step explanation:
3(15.9 - 3.9)
3 · (15.9 - 3.9)
3(15.9) - 3(3.9)
47.7 - 3(3.9)
47.7 - 11.7
y=35x+50
35*8=280
280+50=330
yes there will be 10 dollars left
I hope this is good enough:
14 chaperones, 49 students
