## College Algebra 7th Edition

$1$
RECALL: (1) $\log_b{M}+\log_b{N}=\log_b{MN}$ (2) $\log_b{M}−\log_b{N}=\log_b{\frac{M}{N}}$ (3) $\log_b{(b^x)}=x$ (4) $\log_b{b}=1$ Use rule (2) above to obtain: $=\log_3{(\frac{135}{45})} \\=\log_3{3}$ Use rule (4) above to obtain: $=1$