What two formulas can you use to find the volume of a rectangular prism? why are these formulas equivalent?

Celeste wants to have her hair cut and permed and also go to lunch. she knows she will need $50. the perm cost twice as much as her haircut and she needs $5 for lunch. how much does the perm cost?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

What rotation was applied to triangle def to create d’e’f’?