HSF.IF.A.2 math practice. Learn by doing.

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 $f(x) = -2x + 15$. What is the value of $f(x)$ when $x = 3$?

For the function $g$, $g(0) = 100$. For each increase in $x$ by $1$, the value of $g(x)$ increases by $50\%$. What is the value of $g(2)$?

$b = 100 - 4h$

The equation shown gives the estimated battery charge $b\textsf{,}$ as a percent, remaining on a laptop after $h$ hours of use, where $0 \le h \le 20\textsf{.}$ What is the estimated battery charge, as a percent, remaining on the laptop after $12$ hours of use?

The function $W$ is defined by $W(t) = 40t + 120$. The function models the number of gallons of water in a tank $t$ minutes after filling begins. Which of the following is the best interpretation of the statement "$W(5)$ is equal to $320$" in this context?

A football is kicked straight up from a stadium deck. Its height $d$, in feet, above the playing field $t$ seconds after the kick is modeled by $d(t) = -16t^2 + 64t + 48$. What is the height of the football, in feet, $3$ seconds after it is kicked?

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 $f(x) = 5x - 7$. What is the value of $f(x)$ when $x = 2$?