La suma de las edades de una madre y de su hijo son de 56 años. Hace 10 años las edad de la madre era el quíntuple que la que tenia el hijo. ¿Cuál es la edad actual de cada uno? Tienes que emplear metodos algebraicos.

Desmond wants to sell his car that he paid $8,000 for 2 years ago. the car depreciated, or decreased in value, at a constant rate each month over a 2-year period. if x represents the monthly depreciation amount, which expression shows how much desmond can sell his car for today? \ 8,000 + 24x 8,000 - 24x 8,000 + 2x 8,000 - 2x

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Which angle of rotation is an angle of rotational symmetry for all figures?