2. Decide whether each of the following sets are finite, denumerable or uncountable. Explain each of your answers. (a) {3m : m E Z} (b) {q € Q : q² E {1,2,3,4}} (c) QU (0,1) (d) Qn (0,1)

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9. Find the image of the S = {z: - ≤ Re(z) ≤ π, -1 ≤ Im(z) ≤ 1} under the map f(z) = eiz

Let R(x), C(x), and P(x) be, res pectively, the revenue, cost, and profit, in dollars, from the production and sale of x items. If R(x)= 6x and C(x) = 0.005x+ 3.5x + 70, find each of the following. a) P(x) b) R(200), C(200), and P(200) o) R'(x), C' (x), and P'(x) d) R (200), C (200), and P (200) a) P(x)= VI814 Ce esc % backsc %23 7 8. 3. 4 5 r t y e tab d. f h j 00 %24