A) Here is a number machine.
Input
Output
n
+ 2
x 3
+ 9
Write down an expression for the output when the input is n.
b)
Here is another number machine.
Input
Output
Х
+4
4x + 5
What operations should go in the boxes to make it work?

Which of these sequences is a geometric sequence a 1,2,4, 7, 11, 16, 22. b. 2.4.8.14.22.38 c.3.6.9. 15.18,21 d. 3,9,27,81,243,729,

Ineed to know the answer to this algebra question.

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