Gina bought lunch at school. She had a sandwich and a dessert that cost her $7. Her dessert cost $3.75. Solve the equation 7 = 5 +3.75 to find the cost of Gina's sandwich, s.
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S=
- Gina's sandwich cost $

What is the nth term rule of the linear sequence below? 27 , 25 , 23 , 21 , 19 , . .

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Beth makes batches of bluberry muffins and banna muffins. each batchis 6 muffins. she makes 2.5 batches of bluberry muffins. how many batches of bananna muffins should beth make if she wants to have a total of 60 muffins?