Generate an equivalent algebraic expression by combining like terms.

2x-6y+2x^2-21-4y+4x-x^2

Asap its important using the information in the customer order, determine the length and width of the garden. enter the dimensions.length: feetwidth: feet

Me. i can't figure out this question. give an explanation too. .

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?