Justin earned $25.67 one week and $37.85 the next week. He also purchased a DVD for $19.99 and gas for his car for $22.07. He started with a zero balance in his checking account. Justin recorded all of these transactions in his checkbook and ended up with a balance of $105.58. Was his balance correct? If it was, write an equation to support the answer. If not, find the correct balance.

Anthony Tedesco sold his used mountain bike and accessories for ​$210. If he received   four times as much money for the bike as he did for the​ accessories, find how much money he received for the bike.

Richard invests $298.66 every month into an account. At the end of 30 years, he has a balance of $181,092.15. What interest did he make over 30 years?

The wholesale price for a pair of shoes is $8.50. A certain department store marks up the wholesale price by 70%. Find the price of the pair of shoes in the department store.

J-laws has a balance of $20,000 on her credit card charging 5% interest per month on her unpaid balance. J-laws pays $5,000 toward the balance each month. Find her balance after 4 months.

Jennifer works as a teacher's aide and makes $850 on a bi-weekly basis. What is her average monthly income?

A piece of furniture has a retail price of $780 and is on sale at a 20% discount. What will be the sale price?

Nina deposited $20.59 in her checking account. Later that week, she wrote a check for one third the amount in the account, and then another check for $9.74. If she had $108.60 left in her account, how much did she have to begin with?