Good models are expected to reflect the number of books sold between zero and w numbers of weeks where w is defined.
<h3>What is a model?</h3>
A mathematical model is an equation that serves as a representation of a real life situation. It could be used for investigative or predictive purposes as required.
The following are all domains for which the average rate of change could be a good measure for the number of books sold:
0 ≤ w ≤ 2
0 ≤ w ≤ 7
0 ≤ w ≤ 10
Hence, good models are expected to reflect the number of books sold between zero and w numbers of weeks where w is defined.
<span>If the nemesis has "7/8 of her cats plus 2" it can be written like this: 7/8 x + 2 = x, where x is the number of the cats. After that we can solve the equation. x - 7/8 x = 2; 1/8 x = 2; x = 2 : 1/8 = 2 * 8 = 16. Answer: The nemesis has 16 cats.</span>
