This entails 2 log rules (doesn't matter what base except that the base is the same throughout)
1) logx + logy = log(xy) and (note that subtracting logy from logx leads to log(x/y))
2) nlog(x) = log(xn)
Use rule (2): logx + log(y4) + log(z3)
Use rule (1): log(xy4z3)
Please consider a tutor. Take care.