Which equation shows the quadratic formula used correctly to solve 5x^2+3x-4=0 for x

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?

Does the point (1, sqrt 7) lie on circle shown.

How does reflecting or rotating a figure change the interior angles of the figure?