Ted's family is going to relax at the beach all day! In preparation, Ted made sandwiches for them to eat when they get hungry. Ted put 3 slices of turkey and 3 slices of ham on each sandwich. Pick all the expressions that represent how many slices of meat Ted used on the sandwiches.
a) 3 slices of turkey + 3 slices of ham = 6 slices of meat per sandwich
b) 2 ⋅ 3 slices of turkey = 6 slices of meat per sandwich
c) 2 ⋅ 3 slices of ham = 6 slices of meat per sandwich
d) 6 slices of turkey + 6 slices of ham = 12 slices of meat per sandwich
