A 4 foot man cast a 6 foot shadow how tall is a tree that cast a 21 foot shadow

Someone answer this check out the image!

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.