A log is 18 m long, correct to the nearest meter. It is to be cut into fence posts which must be 80 cm long, correct to the nearest 10 centimeters.

What is the largest number of fence posts that can possibly be cut from this log?

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?