Hey! can someone check my answers?
1.find the greatest common factor: 20y^9 +5y^6
a. 5y^6
b. 5y^9
c. 10y^9
d. 20y^3

and

2. find the greatest common factor: 12xy^5+ 60x^4y^2 _ 24x^3y#3.

a. 3x^4y^5
b. 6xy^5
c. 6xy^2
d. 12xy^2

Guys i really need or i have to stay late up night

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?