Algebra
posted by Mary .
What is the rule??
INPUT OUTPUT
______ 12
9 ______
______ 6
______ 16
7 _______

since you have provided not a single related input and output, I can fill in the table by any rule I wish to use:
6 12
9 18
3 6
8 16
7 14
rule: out = in+in
24 12
9 4.5
12 6
32 16
7 3.5
rule: out = 1/2 in
(6)(2) 12
(9)(5) 45
(√10+2)(√102) 6
(√20+2)(√202) 16
(7)(3) 21
rule: out = in * (in4) 
is the sun a plane figure? explain