Is this relation a function? Justify your answer.

If g(x) is an odd function, which function must be an even function?

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

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.