Equivalent expression 7s+8t+10s+12t

Do u just plot the numbers on the graph like (1,

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?

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.