28 is 12 less than k. how to put this in a equation? ?

David must install fencing around a lot that is shaped like a right angle. the side of lot that runs east-west is 200 ft long. the side of the lot runs north-south is 125 ft long. calculate how many feet of fencing he will need to surround the entire lot.

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.

Solve the inequaliy: (x^2+2)(x−2)^2(6−2x)> 0