If one ruler and three pencils cost N120 and two rulers and one pencil cost N140. Find the cost of
one ruler and one pencil

Which system of linear inequalites is represented by the graph?

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.

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6