How to create an exponential equation for a graph

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.

Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.