Which pair of angles is supplementary?

1.Angles 3 and 7
2.Angles 2 and 5
3. Angles 5 and 8
4.Angles 1 and 3

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.