Use distributive property to solve the problem below:
Maria bought 15 notebooks and 6 pens costing 2 dollars each.How much did Maria pay?	Choose the correct answer:	A) 30 dollars	B) 40 dollars	C) 50 dollars	D) 42 dollars	E) 70 dollars
Solution   2 × (15 + 6) = 2 × 15 + 2 × 6 = 30 + 12= 
<gadget id="calculator">30 + 12</gadget>
<output>42</output>
42 dollars   Answer 42 dollars
<result>D</result>
Use distributive property to solve the problem below:
Maria bought 15 notebooks and 6 pens costing 2 dollars each.How much did Maria pay?