Answer: Maria payed 30 dollars.
Explanation:
- Break up the wording of the problem in order to create an equation.
- Since Maria bought 10 notebooks and 5 pens for 2 dollars each, we recognize that 2 is the number we use in distributive property associated with this equation.
- Formulate the equation:

- Solve accordingly:

Maria payed 30 dollars for the 10 notebooks and 5 pens.