QuestionPostage rates changed from 2006 to 2016.
(a) Let $f(x)$ be the cost of a first-class stamp in year $x$. Find $f(2010)$ and $f(2015)$ given $f(2010)=\$0.36$ and $f(2015)=\$0.66$.
(b) Why isn’t the graph of $f$ accurate? What changes are needed for accuracy?

Studdy Solution
To make the figure an accurate graph of the function $f$, the y-values (cost of a first-class stamp) for each x-value (year) must match the values given by the function $f(x)$.
So, the correct answers areA. $f(2010)=\$0.36$ B. The graph is not accurate because it does not represent the correct cost of a first-class stamp for each year. To correct it, the y-values must be adjusted to match the values given by the function $f(x)$.