Which transformation gives the same result as a rotation of 180° around the origin followed by a reflection over the x-axis?

a. a reflection over the x-axis

b. a rotation of 270° around the origin

c. a reflection over the y-axis

d. a rotation of 90° around the origin

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Can someone me and do the problem plz so i can understand it more better

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap