Crystal reads 25 pages in 1/2. write and equation

Could someone with number 1 and 2

What is the remainder when 3x^2-x-10 is divided by x-1 -6,-7,-8, or -9

David and alton are training for a race. they spend 35 minutes stretching and then go on a 5 mile practice run. david runs at a pace of 7 min/mile. alton runs at a pace of 8 min/mile. write an equation for each runner that shows the total length of their workout. then solve each equation showing your work