Suppose the police operate a sobriety checkpoint after 9 p. m. on a Saturday night when national traffic experts suspect about 12% of drivers have been drinking. Trained officers can correctly decide if a person has been drinking 80% of the time. What's the probability that

a) any given driver will be detained for drunk driving?

b) a driver who was detained has actually been drinking?

c) a driver who was released had actually been drinking?

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Icould really use some with this question.