ATLAS Algebra I Functions. Practice it free.

The function $f$ is defined by $f(x) = -3x + 22$. What is the value of $f(x)$ when $x = 5$?

The function $f$ is defined by $f(x) = x^2 + 3$. What is the value of $f(x)$ when $x = 4$?

For the function $f$, $f(0) = 250$. For each increase in $x$ by $1$, the value of $f(x)$ decreases by $40\%$. What is the value of $f(2)$?

$s = 18 - \dfrac{n}{2}$

The equation shown gives the estimated snow depth $s\textsf{,}$ in inches, remaining on a trail $n$ days after a storm, where $0 \le n \le 24\textsf{.}$ What is the estimated snow depth, in inches, remaining on the trail $10$ days after the storm?

The function $S$ is defined by $S(t) = 450(0.85)^{t/3}$. The function $S$ models the height, in centimeters, of a snowpack, where $t$ is the number of days after a winter storm. According to the model, what is the estimated height, in centimeters, of the snowpack $3$ days after the storm?

A substance has a half-life of $1$ years. What fraction remains after $2$ years?

For what value of $x$ does the graph of $f(x) = 6(x + 9)(x - 13)$ meet the $x$-axis?

The function $R$ is defined by $R(n) = 6n + 15$. The function models the cost, in dollars, of printing $n$ posters for a student club. Which of the following is the best interpretation of the statement "$R(7)$ is equal to $57$" in this context?