May anyone help me with this?

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

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.

Someone me what is the area of this figure? 18m 18m 8m 16m