Chords bc and de intersect at point f as shown what is the length of de

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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.

Use the distributive law to multiply. 3(4x + 5y + 6)