Mike observed that 75% of the students of a school liked skating. if 35 students of the school did not like skating, the number of students who liked skating was (only put numeric values, no other symbols)

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.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Precalculus question, image attached.