Which angles in the pictures are not supplementary ?

a. 4 and 1; 3 and 4
b. 1 and 3; 2 and 4
c. 1 and 2; 2 and 3
d. 2 and 3; 1 and 4

Agroup of five people go out to eat and buy appetizers and main dishes they decide to split the bill so each person pays 20% of the total cost appetizers are $5 and main dishes are $10 write an expression to show how much each person pays explain it with how to solve the problem