6. A hotel puts 4 pillows in each of its, r, rooms and stores
another 100 pillows in case guests want more. If the hotel
has 452 pillows total, how many rooms, r, are in the hotel.
Identify the correct equation and value for r.
a) 4r – 452 = 100
b) 4r + 100 = 452
I c) r= 138
d) p = 88
e) 4(r + 100) = 452