Answer:
Step-by-step explanation:
2(x+y)=parameter
xy=area
If area=parameter then 2(x+y)=xy.
If y=3, then
2(x+3)=3x
2x+6=3x
X=6
now, let’s double check.
6*3=18
2(3+6)=18
Answer:
x = - 20
Step-by-step explanation:

Step-by-step explanation:
I think the first number is 2
Then 2 x 2 = 4 so there is a difference of 4 number
Then in between 6 and 14 there is a difference of 8 so 4 x 2 = 8
Then 16 so 8 x 2 = 16
So after 126 the number is 254