Anyone me? i really need math if you can dm me

In pqr the obtuse angle is 105 and the shorter sides measure 4 and 7 units rounded to the nearest tenth what is the area of triangle pqr

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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