The scatterplot shows the recommended dosage of vitamin d throughout the life of a person. which equation best represents the line of best fit? a) y = 1 5 x b) y = 1 5 x + 2 c) y = 2 5 x − 2 d) y = − 1 5 x + 2

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?