Given a rectangle that is 21 cm longer than it is wide. express the perimeter (in cm) of a rectangle in terms of its width w.

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Mickey needs to cut pieces of ribbon that are each 1 meter long tie onto balloons. if he has 8 pieces of ribbon that are each 1 dekameter long. how many 1 meter pieces of ribbon can he cut

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?