Use the information in the display to construct a 95% confidence interval for p

Which representation has a constant of variation of -2.5

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of florida was approximately two times the population of california. b. the population of florida was approximately twenty times the population of california. c. the population of california was approximately twenty times the population of florida. d. the population of california was approximately two times the population of florida.

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?