4. How many distinguishable 9-letter "words", whether they have a meaning or not, can be made using the letters in the word FISHERMAN if each word must begin and end with a vowel
and each letter can be used exactly once?

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126