Tracy bought 3 tickets for a day tour trip to a city. The price of each ticket was the same. After she bought the tickets, her account balance showed a change of −$95.31. What would have been the change to Tracy's account balance had she only bought 1 ticket for the day tour trip?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Can someone me out here number 4 plz

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.