70 points
answer and if possible explain. i've asked this question 3 times already hence the high points.
you!

multiply and simplify -3x^2y^2 * y^4x3

a. -3x^5y^6

b. -3x^6y^2

c. 9x^5y^2

d. -3x ^5y^2

Will mark the brainliest.paula makes stained-glass windows and sells them to boutique stores. if her costs total $12,000 per year plus $4 per window for the frame. how many windows must she produce to earn a profit of at least $48,000 in one year if she sells the windows for $28 each?