Log10 3+log10 (4x+1)=log10 (x+1)+1
2/7
7/2
3/7
7/3
B. 7/2
log10 3+log10 (4x+1)=log10 (x+1)+1
Log10 3+log10 (4x+1)=log10 (x+1)+log10 (x+1)+log10 10
Log10 (3(4x+1))=log10 (10(x+1))
=3(4x+1)=10(x+1)=12x+3
=10x+10
=2x=7=x=7/2
1
2
3
4
1
1.2
2
2.02
Log10 3+log10 (4x+1)=log10 (x+1)+1
2/7
7/2
3/7
7/3