The formula for the nth term of an arithmetic sequence can be found using the formula an=a1 + (n-1)d. which of the following is equivalent to this equation? a)n=an+a1 b)n=an+a1-d/d c)n=an-a1 d)n=an-a1+d/d

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?