And economic predict that the cost of food will increase by 4% per year for the next several years use the economics prediction to write an expert role for a geometric sequence that gives you the cost in dollars for the box and year and that cost $2.20 in year one

Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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.