Question

Answer the following question by creating an exponential equation? 1. On the day a rumor was started, 4 people knew about the rumor. The next day, and onward, the number of people who knew about the rumor doubled. On what day did 800 people know about the rumor?

Answer 1

Given

Series of numbers

first day = 4

second day = 8

Third day = 16

4, 8, 16, ...

From the exponential sequence

First term a = 4

common ratio r = second term/first term

= 8/4 = 2

r = 2