ISASP High School Functions. Practice it free.

The first five terms of an arithmetic sequence are $8, 14, 20, 26, 32$. What is the $18$th term?

The function $f$ is defined by $f(x) = 7x - 4$. What is the value of $f(x)$ when $x = 3$?

The function $f$ is defined by $f(x) = \sqrt{2x + 1}$. What is the value of $f(x)$ when $x = 4$?

For the function $p$, $p(0) = 200$. For each increase in $x$ by $1$, the value of $p(x)$ decreases by $10\%$. What is the value of $p(2)$?

$g = 9 - \dfrac{m}{4}$

The equation shown gives the estimated amount of paint $g\textsf{,}$ in gallons, remaining after covering $m$ square meters of wall, where $0 \le m \le 36\textsf{.}$ What is the estimated amount of paint, in gallons, remaining after covering $12$ square meters of wall?

A charity drive starts with $80$ donors. Each day after the first day, a model estimates that the number of donors increases by $25\%$ of the number of donors the previous day. Which equation defines this model, where $d(n)$ is the estimated number of donors $n$ days after the drive begins?

The function $D$ is defined by $D(t) = 1{,}500(0.6)^{t/5}$. The function $D$ models the amount of a drug, in micrograms, in a patient's bloodstream, where $t$ is the number of hours after a dose is given. Which statement best describes what the factor $0.6$ represents in this model?

You invest $\text{\char36}2000$ at $5\%$ annual interest for $1$ year. What is the total?