Answer:
2*(-3)= -6
Step-by-step explanation:
I do not see how "a*b=2a-3b" would change the fact 2 times negative 3 is -6
13n^2 -3n should be the answer
The perimeter of a rectangle is the sum of its sides, which are two widths and two lengths:

Since the length is twice the width, we have
, and the formula for the perimeter becomes

So, we have
