Sally works at a restaurant where she earns $23 per hour. David is a tradesman and earns $50 plus $18 per hour. Find the number of hours worked for which Sally and David earn the same amount.

Which graph represents the solution set for the given system of inequalities? x+2y< 3 x+y> 4 3x-2y> 4

What is the factored form of the following expressions? d^2 – 13d + 36

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?