Name_______________________________________________Date________________
Alarm Systems
M7A3
Safe T Systems charges $199 for the installation of their alarm system and then a $35 per
month fee.
Define variables for x and y and write an equation that shows the amount of money Safe
T Systems will collect from each customer based on the number of months they have
service.
x = _________________________________________
y = _________________________________________
Equation:____________________________________
Open the filealarm.xls. Complete the spreadsheet so that it shows the total amount a
customer pays to Safe T alarms during a five year period. (Hint: You will need to type
an equation in cell B2 similarly to how we did in the “Better Buy” activity). How much
has a Safe T Alarm customer invested in the alarm system after 5 years? ____________
Safe T Alarm’s biggest competitor is Uprotect systems. You have just started a new job
working for this company. For your fist assignment, your boss tells you that he is
considering a promotional offer where your company will install the alarm system for
free with a five year contract. However, he wants to make sure that Uprotect Systems
will collect the same amount of money from their customers during the 5 year period as
Safe T Alarm does. Your task is to tell him the least amount of money your company can
charge as a monthly fee and still come out making as much money as Safe T Systems
after 5 years.
Complete column C in the spreadsheet to represent your new company.
Experiment with different formulas to determine the answer to your bosses
question.
Prepare a written summary of your findings for your boss in the space below:
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