Find the greatest common factors: 1) 16p4+4p32) 9x+363) 63+45b4) 6n3-3n55)-6r5-6r46) 63x12-35x67) 14a+21a2+21a38) 10n3-9n2+n9) -28v2-8v-3610) -8x7+24x6+12x511) 20-35n2-20n312) 9x6-63x3-90x213)-3k3+15k2-6k14) 50p3+50p2-2015) 32n3+28n-2016)-90x5+100x+6017) 3m2+9m+2718) 12r2+4r-12

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?

Apool measures 100 meters by 100 meters a toddler inside the pool and trows a ball 60 centimeters from one edge of the pool.how far is the ball from the opposite edge of the pool

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22