What is the answer need help please badly

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Which is an accurate comparison of the two data sets? the commute to work is typically shorter and more consistent than the commute home. the commute to work is typically shorter but less consistent than the commute home. the commute to work is typically longer and less consistent than the commute home. the commute to work is typically longer but more consistent than the commute home.