Assume that an 18-month CD purchased for $7000 pays an APR of 6% compounded monthly. What is the APY? (Round your answer to two decimal places.)

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?