Simplify. write "undefined" for expressions that are undefined.
1)

3 6
−1 −3
−5 −1
+
0 −1
6 0
2 3
2)

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.

Which statements are true about additional information for proving that the triangles are congruent check all that apply

Find the amplitude of a sinusoidal function that models this temperature variation