Presentation on theme: "11-5 COMMON LOGS AND NATURAL LOGS. Any log that has base 10 is called a common logarithm. We usually do not write the 10. We can figure out many common."— Presentation transcript:
Sometimes we use e in an exponential function. When we have base e, we use a natural logarithm (ln x) to solve. Solve 10) 18 = e 3x 11) 4.5 > e.031x
In a study at White Oak, scientist found that time t=0, 5% of people have heard a rumor. After 2 days, 25% of students heard that rumor. How long will it take for 80% of White Oak Students to hear that rumor?