Ordered pairs corresponds to an arrow on a mapping diagram that starts at 4 and ends at 1?

What is the range of the data below? .8090100

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.

Which statement describes surface features called maria on the moon