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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.

What is the value of x in the following equation? -3x-2=2x+8

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class