Describe a real- life multiplication situation of wich an estimate make sense

Combine like terms to make a simpler expression 3z+z

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

If a sprinkler waters 1 over 12 of a lawn in 1 over 2 hour, how much time will it take to water the entire lawn? (5 points) 10 hours 6 hours 1 over 6 hour 7 over 12 hour