You are buying balloons for a party. a small balloon costs $3. a large balloon costs $5. write an algebraic expression for the cost of x small balloons and y large balloons. then find the total cost for 11 small balloons and 6 large balloons. an algebraic expression for the cost of x small balloons and y large balloons is?

1. Let  be the number of small balloons and  the number of large balloons. We know that cost of a small balloon is $3, so the cost of  small balloons is ; similarly, we know that the cost of a large balloon is $5, so the cost of  small balloons is . Now to find the total cost of  small balloons and  large balloons, we just need to add their individual cost together:


We can conclude that an algebraic expression for the cost of x small balloons and y large balloons is 

2. To find the the total cost for 11 small balloons and 6 large balloons, we just need to replace  with 11 and  with 6 in our algebraic expression and simplify:





We can conclude that the total cost of 11 small balloons and 6 large balloons is $63

It says in the questions that it is 6.5?

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