X=0
i simply just did
x+7=x^2+2x+7
-7 -7
x=x^2+2x
then i just isolated the variable. the only number that could fit was 0
So.. hmm check the picture below
now, to know where A and B are, that occurs when the parabolic equation equates the linear one
thus

now, running that on the quadratic formula, you end up with the values of 3.00402497440839842242 and 0.77175977895483027713
thus B rounded up is 3.004 and A rounded up is 0.7718
what's the "y" value for B?, well, you can use either the linear or quadratic equation for that, let's use the quadratic one
Answer:
B.
Step-by-step explanation:
This graph shows 2, and values greater than 2.
So using the conversion of 1 metric ton to kg, we see that there are 1000 kg in 1 ton. Then we can divide 40 by 1000 to find the decimal:

Then to convert this decimal to a percentage, we must multiply by 100%:

So now we know that 40 kg is 4% of 1 ton.