Education researchers are interested in the workload expectations of freshmen at a local university. Which of the following techniques would give a stratified random sample?
O Randomly select 10 freshmen from each of the majors at the university.
O Randomly select 10 freshmen from the cafeteria on each of the 5 days of the first school week.
O Randomly select 1 professor at the university and have them survey all of their freshman students.
O Survey the students in some randomly selected freshman seminar classes, since freshmen are randomly put into
those classes.

The data shown in the table below represents the weight, in pounds, of a little girl, recorded each year on her birthday. age (in years) weight (in pounds) 2 32 6 47 7 51 4 40 5 43 3 38 8 60 1 23 part a: create a scatter plot to represent the data shown above. sketch the line of best fit. label at least three specific points on the graph that the line passes through. also include the correct labels on the x-axis and y-axis. part b: algebraically write the equation of the best fit line in slope-intercept form. include all of your calculations in your final answer. part c: use the equation for the line of best fit to approximate the weight of the little girl at an age of 14 years old.

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Which of the following disjunctions is true? 4 + 4 = 16 or 6 - 5 = 11 4 · 3 = 7 or 3 - 2 = 5 8 - 5 = 13 or 7 · 2 = 12 7 - 4 = 11 or 6 + 3 = 9