Atrail is 2940 miles long. it begins in city a and ends in city b. manfred has hiked three sevenths 3 /7 of the trail before. how many miles has he hiked?

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.

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

In an improper fraction, is the numerator equal to, less than, or greater than the denominator