Simplify 14x(7xy^14)(-9x^-7 y^-3)

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

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?

P= price tax is 4% added to the price. which expression shows the total price including tax?