A parabola intersects the X-axis at X
= 3 and x= 9.
What is the x-coordinate of the parabola's vertex?

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?

How many $20 bills do you need to have to make $280

Divide. write in the simplest form. 4 1/6 divided by 10