Evaluate each expression for the given value. 1. 5x – 11, for x = 6
2. 3a² + 7 - 2a, for a = 4
3. – 2n + 8, for n= -6
4.3(2y - 1) - 4y + 6, for y = 4

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.

Divide. –40 ÷ –5 a –8 b 200 c -200 d 8

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?