In the proof of the Law of Cosines, the equation c^2 = h^2 + (b - x)^2 was created using the Pythagorean theorem. Which equation is a result of expanding (b - x)^2? A. c^2 = h^2 + b^2 - x^2

B. c^2 = h^2 + b^2bx + x^2

C. c^2 = h^2 + b^2 + x^2

D. c^2 = h^2 + b^2 - 2bx - x^2

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

What is the value of x? enter your answer in the box. photo attached.

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?