Question

There were 417 cell phones sold at an electronics store in January. Since then, cell phone sales at

this store have increased at a rate of 3.75% per month. At this rate of growth, which function can

be used to determine the monthly cell phone sales x months after January?

f(x) = 417(1.375)*

f(x) = 417(3.75)

f(x) = 417(0.0375)*

Answer 1

`f(x)=417(1.0375)^(x)`

Explanation:

This question is not complete; please find the question attached.

Sales of cell phones at the store is growing at the rate of 3.75% per month which reveals that the monthly sales of cell phone is growing exponentially.

Sales per month will be represented by the growth function,

`f(x)=A(1+(r)/(100))^(x)`

Where f(x) = Monthly sales

A = Sales in the first month

r = rate of increase in the sales

x = Duration or time

Fro the given question,

A = 417, r = 3.75

So the function showing the monthly sales will be,

`f(x)=417(1+(3.75)/(100))^(x)`

`f(x)=417(1.0375)^(x)`