Help plz i will really appreciate

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

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.