Stephan has 3 pieces of wood. Each piece of wood is .45 feet long. If he puts them together end to end, how long would the wood be? (This is for my little brother)

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?

Find the value of x. give reasons to justify your solutions! c ∈ ae

Precalculus question, image attached.