What is the solution of the above equation?
Timmy has sea monkeys. At the end of the first month that he has them, sea monkeys die, and his parents buy him new ones. At the end of the second month, more sea monkeys die. How many sea monkeys does Timmy have at the end of the second month?
sea monkeys. At the end of the first month that he has them, 
sea monkeys die, and his parents buy him 
new ones. At the end of the second month, 
more sea monkeys die. How many sea monkeys does Timmy have at the end of the second month?