What is the period of y = sin(3x)?

How many sides does a regular polygon have if each exterior angle measures 72a.3b.4c.5d.6

Which graph represents the following piecewise defined function?

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.