How many fiction and nonfiction books are there in the class library altogether

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.