Pls help I'm stuck on these questions and i need to turn this in tomorrow

Step-by-step explanation:

11) 4x+2=5x-10 => 4x-5x=-10-2 => -x=-12 => x=12

12)25x=24x+4 => x=4

13)20x=21x-5 => -x=-5 => x=5

14)20x+10x=180 => 30x =180 =>x=6

To understand it better,you may check the picture down below.

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.