Two cars are traveling in the same direction the first car is going 40 miles per hour and the second car is going 55 miles per hour the first car left 3 hours before the second car which equation could you use to find how many hours it will take for the second car to catch up

The ratio of rock songs to dance songs on jonathan’s mp3 player is 5: 6. the total number of rock and dance songs jonathan has is between 101 120. how many rock songs does he have?

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee, f, for a single job is a function of the number, t, of hours it takes him to complete the job. write the function's formula.

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?