Look at 4.5+ 3) = 45 from the Example a. What does id + 3) represent? b. Why is id 3) multiplied by 4.5? C. How much does Lillie's brother donate?​

Could somebody me with this radical simplification?

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Mon wants to make 5 lbs of the sugar syrup. how much water and how much sugar does he need… …to make 5% syrup?