I believe the answer would be D.
All of them can be accomplished with electronic banking, but C and D would be easiest to do online.
<span>{x | x < 0} and {x | x > 0}</span>
C I’m not really sure but try
<span>9c+(8+3c)
9c+8+3c (collect like terms)
9c+3c+8
12c+8
12c+8 is the answer.
im not sure if your teacher also wants the answer to be in simplest form so im going to do that below as well:
12c+8 (4*3=12 and 4*2=8. you can take out a 4 from those 2 numbers)
4(3c+2) (this is the simplest form of </span>9c+(8+3c)<span>)
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