Answer:
Area of a rectangle = Length × width

So ; Length = 2x + 3
I hope I helped you^_^
Think first is Distributive Property
Combine any LIKE TERMS
Isolate the VARIABLE
By using INVERSE
Check your ANSWER
I think these are the answers hope it helps!
I guess you mean 5m and 14m are the lengths of 2 sides of the triangle.
If the length of any side is equal or greater than the sum of the other 2 sides then you can;t make a triangle.
So for example 19 cannot the answer because 19 = 5 + 14 . No triangle can be formed with sides that measure.
and 38 is greater than 14 + 5 so its cant be C.
The answer is A