Matt has two credit cards with a total balance of $12,000. Of one card charges 10% per year and the other charges 7% per year, what is the balance on each card if the total interest charged in the first year was $960?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?