19. Use a calculator to find the natural logarithm, base e. In 0.0795 In 0.0795 = (Round to four decimal places as needed.) 20. Given In 5 = 1.6094 and In 7 = 1.9459, find the value of the following logarithm without using a calculator. In 175 In 175 = Type an integer or a decimal.) 21. Given In 10 = 2.3026, find the value of the following logarithm without using a calculator. In (10 e) In (10 e) = (Type an integer or a decimal.) 22. Given In 3 = 1.0986 and In 8 = 2.0794, find the value of the following logarithm without using a calculator. 3 "Type an integer or a decimal.) 23. Use natural logarithms to solve the equation. The solution is t = - 0.729t = 4 (Simplify your answer. Type an integer or a decimal. Round to the nearest thousandth as needed.) 24. Find the domain of the logarithmic function and then graph the function. y = In (5x + 4) Find the domain of the function. Type your answer in interval notation. Use integers or fractions for any numbers in the expression. Simplify your answer.) Graph the function. Choose the correct graph below. OA. B. Q Q O C. O D