the area of a rectangle is (x^4+4x^3+3x^2-4x-4), and the length of the rectangle is (x^3+5x^2+8x+2). if the area = length x width , what is the width of the rectangle ?

Abank manager wants to encourage new customers to open accounts with principals of at least $2 comma 500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?