Question (math)thanks

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

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.

If jaime wants to find 60% of 320, which table should he use?