Chapter 4, Problem 66RE

(a)

To determine

The function of the form $f\left(x\right)=a{\left(b\right)}^x$ with the help of the data points from the year 2014 and 2015.

(c)

To determine

To calculate: The number of unique visitors using the app in june 2015 for the function $f\left(x\right)=10{\left(1.043\right)}^x$.

(d)

To determine

The first full month in which the number of unique visitors using the appexceeded 18 billion for the function $f\left(x\right)=10{\left(1.043\right)}^x$.