Please asap! simplify these. (and please let me know which one it is by adding a, b,c !!

A) 4(a^2+5a-6)-3(3a^3+4a-5)

B) 3c^2d(2c^3d^5) / 15c^4d^2

C) (4c^-2 y^3 / xy^-4) ^-2

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?

The conversion factor relating feet to meters is 1 ft=0.305 m. keep in mind that when using conversion factors, you want to make sure that like units cancel leaving you with the units you need. you have been told that a certain house is 164 m2 in area. how much is this in square feet?

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?