11. sharon earns $25 per item she sells plus a base salary of $100 per week. write and solve an inequality to find how many items she must sell to earn at least $700 per week. provide your conclusion as a complete sentence

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?