1. Algebra 1
7.4 Applications for Linear Systems
What are the three ways to solve a linear system of equations?
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You are offered two different sales jobs. Working for Verizon, you are offered an annual
salary of $30,000 plus a commission 1% of your total sales. At AT&T, you are offered a
salary of $24,000 plus 2% of your sales.
a) How much would you have to sell to earn the same amount in each job?
b) If you think you will sell between $500,000 and $800,000 cell
phones/accessories per year. Which job should you choose?
You are offered two different credit cards. MasterCard® charges $75 per year and 15%
interest on your average balance. Visa® charges $15 per year and 18% interest.
a) What would your average balance need to be for the cards to cost you the
same amount?
b) You believe that your average balance is between $1000 and $2000.
Which credit card should you choose?
HW p. 421 (20 – 30 even, 49 and 50)