Bryan used the six steps to solve this problem. on one of the steps, he decided that he would use multiplication and addition to compare the companies and find the best rate. which step did bryan use to him decide?

Nine more than four times a number is the same as one less than twice the number. find the number?

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

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?