Simplify the expression by combining like terms.
15 + 12x - 5x + 4y - 7

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

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)?

Me with this one question, and i'll upvote the brainliest answer