Are the expressions 3(x + y) + 2y + 10 and x + 5y + 2(x + 5) equivalent?

PLEASE HURRY

At a lunchron, guests are offered a selection of five different grilled vegetables and four different meats. in how many waya could one choose three vegetables and two meats?

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?