What is the first quartile of the following data set? 18, 20, 21, 23, 24, 26, 29, 30, 34, 37, 40
A. 21
B. 18
C. 20
O
D. 23

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

Data was collected on myrtle beach for 11 consecutive days. each day the temperature and number of visitors was noted. the scatter plot below represents this data. how many people visited the beach when the temperature was 84 degrees?

Evaluate the expression. (9 + 5)(3 + 2)0