Alyssa had 45$ to spend on 6 snacks. after buying them she had 12$ left how much did each snack cost?

Each snack cost $5.50

You start with $45, and afterwards end up with $12, so subtract 12 from 45 and you end up with 33. Then divide 33 by 6, since she bought 6 snacks, and you get $5.50.

if x = 1, then the answer is 3.5