I got a 286. These are the one i either got wrong or i just didn't know how to do. Can you help me? Thanks
20. the directrix of the conic given by the equation [unparseable or potentially dangerous latex formula](i'm rusty on conics, i can't remember)
31. A set of 5 integers has a mean of 7, a mode of 6, and a median of 6. What is the smallest possible range of the set of integers?(Is there a trick to this)
36. Three letters are randomly chosen from the word EIGHT. What are the odds that the set of three letters randomly chosen consist of at least 2 consonants?
37. The Yu Knee Cu tribe uses a different base other than base 10 to solve their math problems. Using their base they calculated that 34+43=121 and 43-34=5. What answer should they get for 33x4?
54. The Sweet Tooth candy store has four different types of gum balls, a sweet ball, a sour ball, a hot ball, and a red hot ball. They package them in sets of three. How many ways can the store package the gum balls?