D you need more information to answer this question this is want I think I hope I answered the question right
Answer: D; 3 - 7 = -4
Explanation: Since 3 is the largest value in this equation and the arrow is going to the left (starting at a positive and stopping at a negative), you count backwards 7, which would be subtracting 3 from 7 in this case.
Let, the length of garden = l
Perimeter(P) = 2(l+w)
42 = 2(l+6)
42 = 2l + 12
2l = 42 - 12
l = 30/2
l = 15
So, the length would be 15 meter
Hope this helps!
<span>for y varies directly with x, you should have
y=kx
where k is constant of variation.ok</span>
