What’s the product in simplest form?

What is the rescursive formula for this geometric sequence? 7, -14, 28, -56

△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 .

State if the two triangles are congruent. if they are, state how you know?