What is a supplement angle to to a 25 degree angle

If you answer right ill give brainliest, : )

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

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