Find the value of X:

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

The surface area of the triangular prism is .

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?