What is 12x²y - 8x²y² + 11x²y - 4x³y² - 9xy² simplified?

Which shows the image of rectangle abcd after the rotation (x, y) → (–y, x)?

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station. he knows that the state tax is 5.5. how much change will he receive from a $5 bill?