At the start of the month, a dealer purchases four batteries and your warehouse staff selects batteries randomly. What is the probability that all four batteries are fully charged?

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?

You are looking for a bank in which to open a checking account for your new part-time business. You estimate that in the first year, you will be writing 30 checks per month and will make three debit transactions per month. Your average daily balance is estimated to be $900 for the first six months and $2,400 for the next six months. Use the following information to solve the problem. Bank Monthly Fees and Conditions Bank 1 $17.00 with $1,000 min. daily balance-or-$25.00 under $1,000 min. daily balance Bank 2 $4.50 plus $0.40 per check over 10 checks monthly$1.00 per debit transaction Bank 3 $5 plus $0.25 per check$2.00 per debit transaction Bank 4 $7 plus $0.15 per check$1.50 per debit transaction (a) Calculate the cost (in $) of doing business with each bank for a year. Bank 1$  Bank 2$  Bank 3$  Bank 4$

While shopping for a car loan, you get the following offers: Solid Savings & Loan is willing to loan you $10,000 at 4% interest for 4 years. Fifth Federal Bank & Trust will loan you the $10,000 at 5% interest for 3 years. Both require monthly payments. You can afford to pay $250 per month. Which loan, if either, can you take?