Word problem equations

Sandy is upgrading her internet service. Fast internet charges $60 for installation and $50.45. Quick internet has free installation but charges $57.95 per month. How many months would I have to have cable for to pay the same amount with both companies? 

• 60x + 50.45 = 50.75
• 60x + 50.45 = 50.75x
• 60 + 50.45x = 50.75x
• 60x + 50.45x = 50.75x

Members of the Wider Water Club pay $105 this summer season, plus $9.50 each time they rent a boat. Nonmembers do not pay a summer fee but must pay $14.75 each time they rent a boat. How many times would a member and nonmember have to rent a boat in order to pay the same amount?

• 105x + 9.50 = 14.75
• 105x + 9.50x = 14.75x
• 105 + 9.50x = 14.75x
• 105x + 9.50x = 14.75

Your little sister has 8 pages of stickers and 16 extra stickers.  All together, she has 96 stickers.  How many stickers are on each page of stickers?

• 8 + 16 = 96
• 8x + 16 = 96
• 8 + 16x = 96
• 8x + 16x = 96

331 students went on a field trip.  They took 6 buses and 7 students rode in a car.  How many students were on each bus?

• 6x + 7 = 331
• 6x + 7x = 331
• 6 + 7 = 331
• 6 + 7x = 331