Acollege sold tickets to a play at 4 dollars a ticket. anyone who attended and paid for a ticket at the door had to pay 5 dollars a ticket. a total of 480 people attended the play, and the revenue from ticket sales was $2100. how may people bought tickets in advance and how many people paid at the door?

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false