4. the rate of change is constant in each table. find the rate of change. explain what the rate of change means for the situation. time (days) cost ($) اما 75 100 نه 150 dollars per day, the costs $1 for 150 days dollars per day, the cost is $25 for each day. ollars per day, the cost is $25 for each day. dollars per day, the cost is $75 for each day.