Answer:
x - 4 means that the answer will be greater than 3 so the answer could probably, don't take me up on it but it, should be 4 but that is just what my questions answer was. Hope it helps!!!
Answer:
Step-by-step explanation: perimeter = side * 4
therefore the answer is 40 *4
160
Answer: x=13
Step-by-step explanation: Move all terms that don't contain x to the right side and solve.
Hope this helps you out! ☺
Length of the outer frame: 4+2x
width of the outer frame: 3+2x
area of the outframe: (4+2x)(3+2x)=15
expand the equation: 12+8x+6x+12x^2=15
combine like terms: 4x^2+14x-3=0
