The function y=f(x) is graphed below. What is the average rate of change of the function f(x) on the interval -2 ≤ x ≤ 2?

Write the rational number in lowest terms 99/-15

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.

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2