Exercise 3.2.3. Decide whether the following sets are open, closed, or neither. If a set is not open, find a point in the set for which there is no e-neighborhood contained in the set. If a set is not closed, find a limit point that is not contained in the set. (a) Q. (b) N. (c) {xRx0}. (d) {1+1/4+1/9+...+1/n²: nЄN}. I also (e) {1+1/2+1/3+...+1/n: nЄN}. nox

Mrs. Brown has the following graph on the board and asks the class to determine if the domain would be all real numbers. What should the students say? -6 -5 -4 -3 -2 -1 O No, because the domain is restricted to xs0 only. O No, because the domain is not defined for 0 < x<1. O No, because the domain is not defined for 0 sxs1. O Yes, the domain is all real numbers. DD

5.PS-16 Question Help A shoe store uses a 60% markup for all of the shoes it sells. What would be the selling price of a pair of shoes that has a wholesale cost of $55? The selling price would be $ (Round to the nearest cent as needed.) Enter your answer in the answer box and then click Check Answer. All narte chowing Review progress Question 9. of 9 pe here to search

4. For each graph below, answer the following. a. Is the polynomial an even or odd degree polynomial? b. Is the leading coefficient positive or negative. c. State the end behavior of the function, ie as zoo, y → ? and as z →-∞, y → ? d. State each zero (z-intercept) in point form with its multiplicity. Note the overall degree of the polynomial listed with the graph. e. State the y-intercept in point form. f. Find a possible formula for the graph using your answers above. Remember to find the leading coefficient, using either the y-intercept or another point on the graph. g. As always, please discuss each with your group, and make sure you agree on your answers. Share your work. H (050) Sixth Degree Polynomial Seventh Degree Polynomial