4. Solve the following equations. Leave your answer in exact form a)e3'=5 b)5e=7=3 c)2e-3'+1= 11 d) ln(2z+l)=5 5. How much would you need to invest in an account with 2% continuous compound interest to have $30,000 after 10 years? 6. If it takes an 4 years for the amount of money invested in an account compounded continuously, what is the interest rate