9) On Monday, 320 students went on a trip to the zoo. All 6 buses were filled and 8 students had to travel in cars. How many students were
in each bus ?

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.