Question

Write a linear inequality to model the situation below: Then solve for your unknown to determine how many cell phones the family can have:

A cell phone company charges $40 plus $15 per line each month. Jake must spend less than $115 on his family's cell phone bill each month. How many cell phones can his family have?

Answer 1

Family can have less than 5 cell phones

Explanation:

Let

x-------> the number of cell phones

we know that

The inequality that represent this situation is

`15x+40 < 115`

Solve for x

Subtract 40 both sides

`15x< 115-40`

`15x< 75`

Divide by 15 both sides

`x< 75/15`

`x< 5\ cell`