John has to solve the equation 3x = 15. What should John do the the equation? A. John should divide both sides of the equation by 3.
B. John should multiply both sides of the equation by 3.
C. John should add 3 to both sides of the equation.
D. John should subtract 3 from both sides of the equation.

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?

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

The table shown below gives the approximate enrollment at the university of michigan every fifty years. how many more students were enrolled at the university of michigan in 1950 than in 1900?