The salaries of citizens in a certain town are normally distributed. If 15.87% earn less than $15,000 and 6.68% make over $65,000, what is the mean and standard deviation of the distribution? A $30,000 and $15,000
B $40,000 and $25,000
C$35,000 and $20,000
D not enough information to solve
E none of the above

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = -6. which function could heather be writing? fx) = x2 + 36x + 12 = x2 - 36x - 12 f(x) = -x + 12x + 36 f(x) = -x? - 12x - 36

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.

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction