PRECALCULUS TEST REVIEW 3.4 Solve for x. When necessary, approximate your result to three decimal places. 1. 8 x = 512 2. log 4 x = 2 3. e4 x = e x
2
+3
5. 2 ln 4x = 15 4. 2 x + 13 = 35 6. ln x + 1 = 2 7. log 8 (x − 1) = log 8 (x − 2) − log 8 (x + 2) 8. ln x − ln 5 = 4 9. e 2 x − 3e x − 4 = 0 10. log 2 x + log 2 (x + 2) = log 2 (x + 6) 11. 7 + 3ln x = 5 12. 4(3x ) = 20