The data below shows how old each of Brad's eight kids were when they started kindergarten.

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Will positive numbers always have a higher absolute value than negative numbers?