Identify the null and alternative hypotheses for this test. let population 1 correspond to the passenger carspassenger cars and population 2 correspond to the commercial truckscommercial trucks. let a success be a vehicle that only has a rear license plate.

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

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.

Which system of linear inequalities is represented by the graph?