Which expression represents the positive solution of The rest of the problem is in the picture

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

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 you prove that ∆wxz is congruent to ∆yzx, which general statement best describes what you have proved?