8. Evaluate: f(x) = x2 + 1 g(x) = 5 - x a. (f+g)(x) = b. (f-g)(x) =
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We want to know how many brownmies did Fred and his family eat together.
We will call to the total of the brownies by 1. On this case, after Fred ate 1/3 of the brownies, he will have:
This means that he has left 2/3 of the brownies. After his family ate 1/6 of the brownies:
This means they will have left 1/2 of the tray of brownies, and that they ate half of it.