Ineed this is my project i have to do

•the problem
•the correct equation
•the answer
•step by step

!
20 points

What is the 12th term of b(n)=-4-2(n-1)

Need on this geometry question. explain how you did it.

The first floor of marcus’ house is 1,440 square feet. he will cover 1,033 square feet with wood and the rest with tile. a box of tiles will cover 11 square feet. how many boxes of tile does marcus need to buy to cover the floor?