Answer: Distributive property of the multiplication.
Step-by-step explanation:
You did not post Gretchen's expression, but i gues that it is 3*(x + y)
I guess that it is the distributive property of the multiplication.
For 3 numbers, A, B and C, we have that:
A*(B + C) = A*B + A*C
here we have:
3*x + 3*y
We can do the inverse process to the distributive property, and get:
3*x + 3*y = 3*(x + y)
which i guess is Gretchen's expression.
The area of the plot is 600 (20x30) and it needs to be 1200 (600x2)
only the width is changed so you divide it by the length which is 30
1200 divided 30 is 40 so the answer is 40 (another way is to just multiply the width by 2 since it's the only thing changing)
hope this helps :)
Answer:
naruto and the square root to 1 is 1
Step-by-step explanation:
Consider this option:
Common equation for the line is 'y=kx+b', where k&b - numbers, x&y - coordinates.
1) using the points it's possible to make up the system of equations:

b=-3 and k=-1
2) y=-x-3
Answer: B.