What shape is this because i have already put square and rectangle and i got it wrong

What is the radical expression that is equivalent to the expression 27 1 over 5?

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

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?