121 slabs . How many slabs will she need to lay in each row to make a square

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

Which of the following is a solution of z^6 = 64i? 2(cos105° + isin105°) 2(cos120° + isin120°) 2(cos135° + isin135°) 8(cos15° + isin15°)

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a, b and c integers and a> 1