Puzzle Zone

You’ve been hired to decode a message from space! This alien language uses numbers instead of letters. But luckily for you, each number represents a letter in the English alphabet: 1 = A, 2 = B, and so on.

What’s the secret message?

 23      5                3       1       13       5           8      5        18      5        
___   ___           ___   ___   ___   ___      ___   ___   ___   ___

 20      15          16       1       18     20     25!

___   ___        ___   ___   ___   ___   ___  

The numbers at the corners and centers of these triangles follow a rule.

What number goes in the center of the third triangle?

Makayla bought her Halloween mask using only 2 bills and 2 coins.

Which mask did she buy, and which bills and coins did she use to buy it?