13) Which measure of central tendency can be used for both numerical and categorical variables? A) Mode B) Arithmetic mean C) Geometric mean D) Median

With math question will mark brainliest question in the pic.

Can someone answer this question? : )

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.