2times the square root of 49, what are all the possible answers ?
49
7
14
etc ? ?

Only 14 is the answer to 2 times the square root of 49 (which is 7)

So the simplest way to get this is think about number that multiply themselves.
So 4x4=16, 3x3=9 things like that, in this case it's 7x7=49. Then the question ask you to multiply that times two and you get 14.

The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: $785,862hope this