Consider the equation: x^2=-8x-7 1) Rewrite the equation by completing the square
Write it as (x+c)^2=d or (x-c)^2=d
2) What are the solutions to the equation?
A. x=-4±3
B. x=4±3
C. x=-4±9
D.4±9
Please help! Thanks :)

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.