The windows of a downtown office building are arranged so that each floor has 6 fewer windows than the floor below it. If the ground floor has 52 windows, how many windows are on the 8th floor? A. 10 B. 8 C. 4 D. 6

The given situation described above is that of an arithmetic sequence with first term (a1) equal to 52 and common difference (d) equals - 6. To find the nth term, use the equation,

an = (a1) + (n - 1) (d)

Subsitutitng the known values,

a8 = 52 + (8 - 1) (-6)

The answer to a8 from the equation is 10.