Identify the slope and y-intercept of y = -x +1

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.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

Find the distance from the theater to the library. leave your answer in simplest radical form if necessary. 12 √12 74 √74