To find the average income of an adult in the United States, 250 workers in Tennessee are questioned.
No; the sample is not selected from the population to be studied.
No; the sample is not random.
Yes; the sample is selected at random from the population to be studied.

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.