You are interested in how stress affects heart rate in humans. Your
dependent variable would be the

A. Interest
B. Heart rate
C. Humans
D. Stress

Sum is 17 and their difference is 3

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.

Aline passes through 3,7 and 6,9 what equation represents the line