Please explain how to get all real solutions

What is the rotational symmetry of a wheel

Explain how you can use the associative property to evaluate (7x50)x4.

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet