exam Maths Puzzle Numerical Ability

Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic sequence?

Which one of the basic functions (linear, quadratic, ratio

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I need help in solving this equation

2(x+3) = -4(x+1)

This is how I started:
2x+6 = -4x - 4
2x + 6-6 = -4x-4-6
2x = -4x - 2
2x + 4x = -4x+4x-2
6x = 2
(my answer is incorrect) The length of a retangle is twice the width. The area is 392 yards^2. Find the length and width.

I tried to solve this problem, but I am not sure if I did it correctly.

A=196(95)-(95)
=18620 - 9025
=9595

w=95
l=95