Which is NOT a solution to the following piecewise function: f(x) =
[2x+1 if x<1
- 2x + 3 if x 21
O (0,1)
O (1,1)
O (3,5)

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.

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)

Jubal wrote the four equations below. he examined them, without solving them, to determine which equation has no solution. which of jubal’s equations has no solution hurry