4. Customer Lifetime Value (LTV) Assuming that the average customer will use their smart phones until they are 85 years old, what is the LTV for each of the following customers? Assume that their average monthly smart phone cost will remain the same throughout their lives.

Customer, Current Age, Monthly Cost

Shelly 25 $80

Bruce 16 $75

Khalid 45 $25

Nathan 21 $62

Chloe 32 $20

Brenda 29 $30

Dave 67 $50