Help me solve the following problems

Problem # 9

Solve:

a) 3^2+y= 9

b)e^t+1= 1

c)logx+log(x2)=log(3x+2)

d) 2e^2y+3- 4 = 4

Problem #10

Write each as a single logarithm

a)5log7x+3log7y

b)3log2x2log2y

c)3ln(x+y)2lny5lnx

d) d)12log(z+1)2logx4logy3logz