Sales tax is 7%. if c represents the retail cost of an item, which of the following expressions represent(s) the total cost of the item? multi choice answer
c - 0.07c
0.07c
c + 0.07c
1.07c
0.93c

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Is there a picture because i cannot answer it sorry