There are eight members of a jazz club who are listed below. A concert director can choose some or all of them to be part of a large show. She must choose at least one of them. Anh, Bryan, Carol, Dan, Elise, Felix, Harry, Joy

In how many different ways can the director choose the members for the show? (The order the members are chosen doesn't matter.)

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.