1. 1/3(6x-18)=-5+4x-15

2. 1/4(12x-4)=5x-2x-1

3. -a-(2-a)=5-3

one of them has one solution, one has no solution and one has infinitely many solutions

show work to get your answer

i tried doing this and asking my teacher but i dont understand it and its for a test tommarow.. !

An advertising firm has an old computer that can prepare a whole mailing in 6 hours. with the of newer model the job is complete in 2 hours. how long would it take the newer model to do the job alone?

Scott’s bank account showed a balance of $750 on sunday. during the next five days, he made one deposit of $140 and numerous withdrawals of $180 each. let x represent the number of withdrawals that scott made. write an inequality that can be used to find the maximum number of withdrawals that scott could have made and maintain a balance of at least $100. do not use a dollar sign ($) in your response.

Yo need asap pls ! markin da brainiest too !