Your grandmother needs to hire a plumber. Plumber A charges $30 an hour plus a $75 house call fee. Plumber B charges $25 per hour with a $100 house call fee. Below is the beginning of a table representing this situation. Fill in the rest of the table, find its solution, AND tell what it means in this situation? The answer would be in the form of ( __ , __ )

I'm so close to finishing all these.

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.

Let x = a + bi and y = c + di and z = f + gi. which statements are true?