Hey there!
[tex] Twice: 2 \\ Sum: + \\ y (and) z : y,z \\ increased : + \\ y = y [/tex]
So, this means that your answer would most likely be set up like this: [tex] 2(x +y)+y [/tex]
Good luck on your assignment and enjoy your day!
~[tex] LoveYourselfFirst:) [/tex]