George is trying to make some decisions about his business and has come up with P = (x - 100)(x + 20), where P represents his profit
margin and x represents the number of DVDs he sold. What does (x - 100) mean?

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

step-by-step explanation:

in which figure is point g a centroid