Help me plz! : ))) thnx whoever does

How can we find the measure of an exterior angle if we know the measurement of an interior angle

Which of the following statement about pascal's triangle are true?

Astrid spent $36 on new shoes. this was $12 less than twice what she spent on a new skirt. part a: which equation would solve for how much she spent on the skirt? part b: solve the equation in the workspace provided below. how much did astrid spend on her skirt?