KSA Grade 10 Functions. Practice it free.

The $x$-intercept of the graph of $y = 2x - 8$ in the coordinate plane is $(x, 0)$. What is the value of $x$?

The function $f$ is defined by $f(x) = \sqrt{2x + 17}$. What is the value of $f(x)$ when $x = 16$?

The function $f$ is defined by $f(x) = x^2 - 5$. What is the value of $f(x)$ when $x = 3$?

For the function $r$, $r(0) = 27$. For each increase in $x$ by $1$, the value of $r(x)$ increases by $100\%$. What is the value of $r(2)$?

$f = 20 - \dfrac{n}{2}$

The equation shown gives the estimated amount of flour $f\textsf{,}$ in cups, remaining after baking $n$ cookies, where $0 \le n \le 40\textsf{.}$ What is the estimated amount of flour, in cups, remaining after baking $12$ cookies?

The function $I$ is defined by $I(t) = 275(1.04)^t$. The function $I$ models the balance, in thousands of dollars, of an investment account, where $t$ is the number of months after the account was opened. According to the model, what is the estimated balance, in thousands of dollars, of the account $1$ month after it was opened?

You invest $\text{\char36}400$ at $25\%$ annual interest for $1$ year. What is the total?

The graph of $y = -2(x + 15)(x - 8)(x + 3)$ intercepts the $x$-axis at which value of $x$?