### Exponential and Logarithmic Functions

1. Solve for x: ln(7x-1)=6 Answer: a.57.4898 b.403.572 c.403.286 d.57.7755 2. Solve for x: ln x = 3+ln(x-1) answer: a.3.95257 b.0.952574 c.1.0524 d.5.0524 3. The half-life of carbon-14 is 5730 years. Find the percent of a sample present after 5370 years. Answer: a.101.25% b.