Answer:
1,500 tickets in total (375 adult tickets and 1,125 children tickets)
Step-by-step explanation:
Let x be the number of adult tickets sold.
Three times as many children tickets were sold as adults, so 3x is the number of children tickets sold.
Children tickets were three dollars, so 3x children tickets cost 
Adult tickets were seven dollar, so x adult tickets cost 
The school sold $6000 worth of tickets.
Hence,

Question 5:
x/3=6
x=3(6)
x=18
Question 4:
2.3k=4.83
k=4.83/2.3
k=2.1
Question 6:
y=3/4-1/2
y=1/4
Question 2:
8r=24
r=3
Hope this helps!! :)
Answer:
i think its quadratic
Step-by-step explanation:
X² = hyp² - cat²
x² = 625 - 156.25
x² = 468.75
x ≈ 21,6
Answer:all of the above
Step-by-step explanation:
It is a number that can be divided by 5 and equal 5 and it is whole.