D-7 Solving Exponential Equations Using Logs Notes WARM UP: Evaluate each expression (most can be done without a calculator ). If an expression is undefined, explain why. a. 2 (−2) b. ln 4 c. 5 10 d. 3 (0) d. 1 3 (1) Example: Use logarithms to solve each equation to the nearest thousandth. a) 2 + 5 x+2 = 164 b) 7 = −1 ∙ 2.3 x c) 3 ∙ 7 + 2 = 24 d) − + 1 = 20