Consider polynomials P and Q. P = 8y^4 + 6y^3 + 8y
Q = (5y^2 - 4y)(3y^2 + 7)

Which operation results in an expression equivalent to 23y^4 - 6y^3 + 35y^2 - 20y4?

A. PQ
B. P - Q
C. Q - P
D. P + Q

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! "?