You start a new job. After w weeks, you have (10w + 120) dollars in your savings account and (45w + 25) dollars in your checking account. a. What is the total amount of money in the accounts?

b. How much money did you have before you started your new job?
How much money do you save each week?

c. You want to buy a new phone for $150, and still have $500 left in your accounts afterwards. Explain how to determine when you can buy the phone?