Answer:
C is 5x+13 D is 5x+12
Step-by-step explanation:
expand brackets
Im guessing you meant it takes 1/3 cups of flour to make 1/4 of a cake not "14"
in that case you would do
1/3+1/3+1/3+1/3
or 1/3*4
which would be 4/3
or
1 1/3
23
