60% of what number is equal to 307?

The polygon tool to draw a rectangle with a length of 5 units and a height of 3 units. one of the sides of the rectangle falls on line ab , and the rectangle has a vertex of a. each segment on the grid represents 1 unit.

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

Is it true or false i’m trying to pass this test so i can leave school