b) Determine the value of C(100). What does this number represent? c) Determine the value of n when C(n) = 5000. What does this number represent? [Answers: a) C(n) = 25n+ 1000 b) $3500 c) 160] 5. Which sets of ordered pairs represent functions? Identify the domain and range of each set of ordered pairs. a) {(1, 3), (2, 6), (3, 9), (4, 12)} b) {(1, 0), (0, 1), (-1, 0), (0, -1)} c) {(2, 3), (4, 5), (6, 7), (8, 9)} d) {(0, 1), (0, 2), (1, 2), (0, 3), (1,3), (2, 3)) 6. Write in function notation