According to the US Census Bureau, the population of the state of Arizona was 5,130,632 people, in the year 2000. In the year 2010, it was 6,392,017 people
1. Use this information to express the population as a linear function of time since the year 2000. (Make sure to define the variables you use.) .
2. What does this model predict that the population will be in the year 2019?
Q2 Linear Functions
A solar water heater costs about $5800 to install. A traditional gas water heater costs about $900 to install and about $325 per year to use. The average annual cost to use the solar water heater is about $90.
Q2.1 Part a)
Grading comment:
Create a total cost function for the solar water heater.
Create a total cost function for the gas water heater.
Make sure to label each function, define your variables, and use proper notation.
Q2.2 Part b)
Graph the functions that you created on the same set of axes. (Make sure to label the axes, label all important points, use an appropriate scale, and use an appropriate window).
How many years would you need to use a solar water heater in order for the total cost to become less than the total cost of the gas water heater? How do you know?