Okay, for the one with the circle and the two lines tangent (one of which was the x axis), and you had to find the area of the quadrilateral (i.e. the area of the two triangles):
wasn't it 4, b/c each triangle had an area of 2? Someone please confirm. What was the coordinate of the center of the circle??
But it couldn't have been 4 because the base of the entire triangle was 4, the radius was one, so if you took the area of the big triangle with base 4 and height 2 the area would be 4 and the area of the two triangles must be less than that.
what did you get for the question in the first math section with the average number of kids per family? 3.2? I ran out of time to go back and check that one grr.
@noble6: the radius WAS the height, if you drew a line from the (0,0) to the center (4,1), you get the base of each triangle to be 4, and the height to be 1.