3. How many
tiles whose length and breath are 13cm and 10 cm respectively are needed to cover a recta
gular floor whose length and breadth are 520 and 140cm respectively

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.