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find the area of the composite figure

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Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

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 of these tables represents a non-linear function?