Answer:

• subtract eqn(b) from eqn(a);

• find x :

(x + 2)(- 8x + 1) are your factors.
Of course!
Cube: side length * side length * side length
So if it's a 6x6x6 cube, it's 6*6*6 = 216
Rectangular Prism: side length * side height * base width
So if it's a 6x7x8 prism, it's 6*7*8 = 336
Cylinder: π * (radius squared) * height
So if the base's radius is 6 and the height is 7, it's π*6^2*7 = 252π
Yes, she would finish in time because 10^2=100, if she reads 20 pages per day, it'll take her 5 days to finish her reading before the 6 days