读图,回答问题:
This meeting room is a non-smoking area. I would like to warn you _____ that if you smoked here you would be fined.
根据表格中代数式ax2+bx+c=0与x的对应值,判断方程ax2+bx+c=0(其中a,b,c是常数,且a≠0)的一个根x的大致范围是( )
x
6.17
6.18
6.19
6.20
ax2+bx+c=0
﹣0.03
﹣0.01
0.02
0.06