Two accounts earn simple interest . The balance y in dollars in account A after x years can be modeled y = 20x + 400

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Prove that 16^4-2^13-4^5 is divisible by 11.