Select all the expressions that are equivalent to 7(2 - 3n). Explain how you know each expression you select is equivalent.
1. 9 – 10n
2. 14-30
3. 14 - 21n
4. (2 - 3n).7
5. 7•2• (-3n)

Three times the difference of federico’s age, and 4, increased by 7, is greater than 37. what are possible values of federico’s age?

What is the measure of angle tvu shown in the diagram below

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.