The weekly pay for working a job is given by the function p(h) = 15h, where "h" is the number of hours worked. the company restricts workers to a maximum of 40 hours per week. the tax on the pay is given by the function t(p) = 0.18p, where "p" is the weekly pay. what is the best description of the domain for the tax function t(p)? a) {0, 1, 2, 3, 40} b) {0, 15, 30, 45, 600} c) {any nonnegative real number ≤ 40} d) {any nonnegative real number ≤ 600}