Answer:
i think the answer is B
Step-by-step explanation:
Unfortunately your response would only be true if CD was perpendicular to AB. However we don't know if CD is perpendicular or not. So we don't have enough information. The actual answer is choice E) None of these.
I got 7.1 x 10^(-11) but it's been a few years so I could've done it wrong

multiplying both sides by x^2

simplifying

dividing by 7
1/100+1/100+1/100 Hope this helped! I remember taking this unit in Elementary. Good luck!