Can someone please explain with all the steps how to solve this? Thank you!

Question-2 (A choice problem) (40 points) Find the optimal bundle using the following utility functions and budget constraints.

1. U(x, y) = lnx + y and 2x + y = 10

2. U(x, y) = 3x + 2y and 3x + 2y = 24

3. U(x, z) = 3x + 2z and 3x + 6z = 24