Answer the questions: a. What type of a relationship is suggested by the scatter plot (positive/negative, weak/strong)?

b. What is the domain of ages considered by the researchers?

c. What is the range of incomes?

d. Do you think age causes income level to increase? Why or why not?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Lines b and c are parallel. what is the measure of 2? m2 = 31° m2 = 50° m2 = 120° m2 = 130°

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.