What is the measure of abc in the figure below?
a. 42
b. 48
c. 84
d. 30
e. 21
f. cannot be determined

I've never been good at math he told he loves but he keeps cheating on me, so it ain't adding up sis

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

In two or more complete sentences describe how to determine the appropriate model for the set of data, (1,1), (3,2), (6,3), (11,4).