Posted by **Mary** on Thursday, September 12, 2013 at 10:33pm.

The set S= {AAA,AA,C,D} represents the sizes of batteries a hardware store offers.

The set T= {regular, alkaline, rechargeable} represents the possible types of the batteries. Find the cross product S x T to determine how many different batteries are being sold at the hardware store.

- Algebra -
**Steve**, Friday, September 13, 2013 at 12:21am
AAA,reg

AAA,alk

...

D,alk

D,rech

4x3 members in SxT

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