Joanne is looking for a job as a teacher. She plans to send resumes to 123 schools in her county. Her local printer charges $23 per 100 copies, and sells them only in sets of 100. a. How many copies must Joanne purchase if she is to have enough resumes?
b. How much will the copies cost her, including 8% sales tax?
c. If the number of sets of 100 resumes is represented by x, express the cost, with 8% sales tax, of the resumes, r(x), as a function of x.