A=adult tickets
c=chlderenticekts
s=sinior tickets
a=c
a+c+s=120
2a+s=120
total made is 1100
12a+6c+10s=1100
sub
a=c
12a+6a+10s=1100
add
18a+10s=1100
multiply first equation by -9 and add to other equation
-18a-9s=-1080
18a+10s=1100 +
0a+s=20
s=20
20 senior tickets were sold
answer is B
15mph. 45/3=15 . She biked 15 miles per hour .
4x - 10 = 34
4x +10 +10
4x = 44
4x/4 = 44/4
x = 11
It’s graph must go through the origin ?
