Donna read 18 out 30 pages in her book. What percent of the book did she read.

Factor. 2x2 + 4x + 18

Use the prime factorization of 24 and 28 find their greatest common factor

1. Suppose a and b are real numbers where a > 0 and b < 0. a. Is - a + b positive or negative. Explain how you know. b. Is a - b positive or negative? Explain how you know. c. Is b - a positive or negative. Explain how you know.

If the base of the sail is 12 feet long and the height is 16 feet, what is the value of x?

Elsa lives in Campbell, where the cost of living increases by 5% every year. If Elsa spends $71,000 this year, how much can she expect to spend 14 years from now to maintain the same standard of living?

All of the following are ways to write 25 percent of N except A. 0.25 N B. 25N/100 C. 1/4 N D. 25 N The answer is D but I want to know why

I'm picking a number between 1-20. I add 5, then I times the number by 3. Lastly I takeaway it by 15. My answer is 42. What was my beginning number? Clue: Do the opposite. 42 ADD 15 ...

Clara is a the sales person. She sold a brief case for $66 and earned 20% commission How much commission did Clara earn?

3/4,19/20,1/6,3/5,8/15 what is lcd

Suppose you need to write a sum of numbers as a product of their GCF and another sum. What is the GCF of the numbers in the other sum? Explain