To simplify this....
2y - 5(y - 3)
Multiply the number outside the parenthesees by each number inside the parenthesees and add the products together. This is called "Distributing."
2y + (-5 * y) + (-5 * -3)
2y - 5y + 15
Combine like terms.
-3y + 15
1.16 = 1.771561
1.12 = 1.21
But I don't know where to go from here ...
I am fine.
1.
This will form a sphere when rotated about the axis.
2.
This will form a hemisphere when rotated about the axis.
