Which statement best explains the value of 12 − (−4)? the additive inverse of −4 is −4, so 12 − (−4) = 16. the additive inverse of −4 is −4, so 12 − (−4) = 8. the additive inverse of −4 is +4, so 12 − (−4) = 8. the additive inverse of −4 is +4, so 12 − (−4) = 16.

Which of the following graphs represents the function f(x) = 2^x

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

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.