What is the approximate solution of this system of equations? y = 2x
y = 3x

(0.5, 1.4)
(-0.5, 1.4)
(3.3, 9.9)
(3.3, -9.9)

What is the difference between the equations of a vertical and a horizontal line?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

If set d is not the empty set but is a subset of set e, then which of the following is true? d ∩ e = d d ∩ e = e d ∩ e = ∅