(8 points) A company has been making surfboards for many years. The monthly overhead is $25,600 and each surfboard costs $525 in materials and labor to make. If these items are sold for $558 (a) How many surfboards must be sold to break even? Answer: 23.64 (b) What is the profit in dollars if 176 surfboards are made and sold? (Enter value but omit dollar sign.) Answer: 5808 Note: Coursepack page 83, EX 8.6 (8 points) A game of chance involves rolling a 17-sided die once. If a number from 1 to 3 comes up, you win 2 dollars. If the number 4 or 5 comes up, you win 10 dollars. If any other number comes up, you lose. If it costs 4 dollars to play, what is your expected net winnings? Answer = -1.29 dollars. At least one of the answers above is NOT correct. (8 points) A random sample of 700 adults in Flagstaff found 42 adults who had lost a job in the past year. Find a 95% confidence interval for the true percent of adults in Flagstaff who have lost a job in the past year. Express your results to the nearest hundredth of a percent. . Answer: 4.24 to 7.76 0%