1. A graph shows that as time passes, the temperature of a substance decreases. This is an example of
2. A graph shows that as more hours are spent studying, the grades of a student improve. This is an example of a
3. What does a flat line on a graph usually represent?
A theater will sell 500 tickets to a play if it charges $10 per ticket. Furthermore, every time it raises the price by one dollar, it will sell 50 fewer tickets because some people will think it too expensive. Which of the following functions t(d) represents the number of tickets the theater will sell if it charges d dollars per ticket?
A taxi ride costs $4.25 for the first mile and $0.70 for each mile after the first. Which of the following functions c(d) gives the total cost (in dollars) of traveling d miles (assuming that d ≥ 1)?
Exponential functions grow by equal factors over equal intervals. By what factor does the exponential function f(x)=3-2x grow by over every interval whose length is 3?
A linear function can be used to convert a temperature from Fahrenheit to Celsius. For example, you can use it to convert 32oF to 0o C and 68o F to 20oC. Use this information to convert 104o F to Celsius.