help me it has to do with circles if you dont know how to do things with circles dont answer this question.

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

What numbers are included in the set of integers? what numbers are not included?

Shape a is congruent to shape , as shown by a reflection across the y-axis and then a translation down units. shape b is congruent to shape , as shown by a reflection across the y-axis and then a translation down units.