9ab + 3b2 – 7b2 + 8ab - 12

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?

Ahyperbola centered at the origin has a vertex at (-6,0) and a focus at (10,0)

Similarly fie each expression 18,19,20