Answer:
c
Step-by-step explanation:
For example, say that the regular price was $2. 0.10 x 2 = 0.20. Using the info in option c, then she would subtract 0.20 from 2, which would give her the sale price. Hope this helps!
Idk if this is right, but I THINK that would be 10 or -10, due to their equal distance.
F
1(10) + 12= 22
2(10) + 12= 32
etc.....