Sum of two numbers is 42 and their difference is 8 . Find the numbers ?​

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.

Identify the number as a rational or irrational.explain. 127

What is r i 4.5+10r=-6.5 with work pls