30b^4 - 45b^3 - 10b^2 + 15b factor this expression with work ?

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 .

Awasher and a dryer cost $701 combined. the washer costs $51 more than the dryer. what is the cost of the dryer?

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.