PLEASE HURRY What value(s) for n will make this expression true?
3.5 only
0 and 3.5
In = 3.5
3.5 and -3.5
-3.5 only

The marked price of an article is 25% above its selling price and the cost price is 30% less than its marked price . find the discount percent and gain percent. only a brainlest can solve it i will mark you brainlest