2x – 4 = 6
The answer is 10, but I just need a step by step explanation for this

If 25% of y is 30, what is 60% of y?

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.