Help me pls! the sum of two polynomials is -yz2 -3z2 -4y +4.if one of the polynomials is y -4yz2 -3, what is the other polynomial?

-2yz2-4y + 7

-2yz2 -3y + 1

-5yz2 -3z2 -5y +7

3yz2 -3z2 -5y +y

Me! i will mark brainliest! i don't get polynomials and all that other stuff. so this question is really hard. multiply and simplify.(x - 4) (x^2 – 5x – 6)show your

Out of 50 students surveyed, 16 have a dog. based on these results, predict how many of the 280 students in the school have a dog.

Melissa is purchasing a $160,000 home and her bank is offering her a 30-year mortgage at a 4.9% interest rate. in order to lower her monthly payment, melissa will make a 20% down payment and will purchase 3 points. what will her monthly mortgage payment be? a. $645.98 b. $650.46 c. $662.93 d. $606.69