Lisa purchased a prepaid phone card for $25 . long distance calls cost 12 cents a minute using this card. lisa used her card only once to make a long distance call. if the remaining credit on her card is $19.96 , how many minutes did her call last?

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.