Plz

factor completly: x3 + 7x2 + 10x

a)
x(x + 5)(x + 2)

b)
x(x + 5)(x - 2)

c)
x(x - 5)(x + 2)

d)
x2(x + 5)(x + 2)

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?

This is so hard and it’s for a test