Cortal! 14. Tamara has two sisters. One of the sisters is 7 years older than Tamara. The other sister is 3 years younger than Tamara. The product of Tamara's sisters' ages is 24. How old is Tamara?

A crime-scene investigator has 3.4 ounces of a sample. He needs to conduct four tests that each require 0.6 ounces of the sample, and one test that requires 0.8 ounces of the sample. How much of the sample remains after he uses it for the five tests?

Add: (a) 3m2+n27m2 (b) pq26p5q2 .

How many ways can 4 men and 4 women stand in line if all the women are first?

Describe how you have used two topics from this chapter in your life outside of your math class during the past month.