Suppose you have a job that pays $8.50 per hour and you work anywhere from 10 to 40 hours per week. a. Write an equation, with a restriction on the variable x, that gives the amount of money, y, you will earn for working x hours in one week. b. Use the function rule you have written in part (a) to complete Table 2.c. Construct a line graph from the information in Table 2. d. State the domain and range of this function.

Chapter 7: Sampling Study a large population by selecting a smaller sample. Example: height of adult women in the United States Population: all women in United States Sample: select 1000 women Example: unemployment statistics Population: entire workforces Choose a sample of individuals from the work force Avoid bad sampling – a sample is biased if it is not representative of the population Convenience sample a sample consisting of individuals because they are easier to reach Voluntary sample a sample which is based on individual’s willingness to respond Example: online polls, gets a sample of people more interested in the survey questions. Under coverage a list of individuals in the population is incomplete Example: suppose you want to