What is the area of the 30 x 40 rectangle, in square units?

In the diagram of circle a what is m

This is so hard and it’s for a test

Question: a) does the given set of points represent a linear function? how do you know? b) assume that the point (-2,4) lies on the graph of a line. what y-values could complete this set of ordered pairs that lie on the same line: (- (hint: there are several correct answ