Assuming repeats are allowed, use the Fundamental Counting Principle to determine how many ways you can: 1. write 3 letters followed by 2 digits

2. create a pin made of 4 characters (can use digits and alphabets)

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.

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Which expression is the factorization of x^2+10+21