If anyone could please help with this the teacher did not explain in a way I could understand please ignore the work I did I attempted but have no idea what I’m doing

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

Jacob signs up to work for 2 1/2 hours at the school carnival. if each work shift is 3/4 hour, how many shifts will jacob work? (i just want to double check : |, for anybody that responds! : )

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !