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The graph represents the total charge, in dollars, by an electrician for $x$ hours of work. The electrician charges a onetime fee plus an hourly rate. What is the best interpretation of the slope of the graph?

Oxygen gas is placed inside a tank with a constant volume. The graph shows the estimated temperature $y$, in kelvins, of the oxygen gas when its pressure is $x$ atmospheres.

What is the estimated temperature, in kelvins, of the oxygen gas when its pressure is $6$ atmospheres?

Robert rented a truck to transport materials he purchased from a hardware store. He was charged an initial fee of $20.00 plus an additional $0.70 per mile driven. If the truck was driven 38 miles, what was the total amount Robert was charged?

$f\left(x\right)=2x+3$

For the given function $f$, the graph of $y=f\left(x\right)$ in the xy-plane is parallel to line $j$. What is the slope of line $j$?

The function f is defined by , where m and b are constants. If and , what is the value of m ?

The population of snow leopards in a certain area can be modeled by the function P defined above, where is the population t years after 1990. Of the following, which is the best interpretation of the equation ?

For groups of $25$ or more people, a museum charges $\$21$ per person for the first $25$ people and $\$14$ for each additional person. Which function $f$ gives the total charge, in dollars, for a tour group with $n$ people, where $n\ge 25$?

If $y=5x+10$, what is the value of $y$ when $x=8$?

The table above shows the population of Greenleaf, Idaho, for the years 2000 and 2010. If the relationship between population and year is linear, which of the following functions P models the population of Greenleaf t years after 2000?

The function $g$ is defined by $g\left(x\right)=10x+8$. What is the value of $g\left(x\right)$ when $x=8$?

$f\left(x\right)=7x+1$

The function gives the total number of people on a company retreat with $x$ managers. What is the total number of people on a company retreat with $7$ managers?

Which of the following is the graph of the equation  in the xy-plane?