Jordan purchased 2 books that cost the same amount of money. The total cost after using a coupon for $5 off his entire purchase was $21. What equation represents the cost per book, b, for Jordan's purchase? *

What is the absolute value of the complex number -4-sqrt2i

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate. true or false?