Select all the functions that have no real number solution. 4x^2 + 100 = 0 3x^2-9= 0 x²+1=0

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

Mr. thompson is on a diet. he currently weighs 260 pounds. he loses 4 pounds per month. what part of the story makes the relationship not proportional?

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.