Answer: The school band received 87.6S dollars on selling sandwiches at their last fundraiser.
Step-by-step explanation:
Let the cost of per sandwich that the school band make be S dollars per sandwich.
Selling price of each sandwich be 20% more than it costs .
So, Selling price becomes
[tex]S+\frac{20}{100}\times S\\\\=S+0.2S\\\\=1.2S[/tex]
Since we have given the expression :
[tex]73(s+0.2S)[/tex]
That means there are 73 sandwiches as cost is per sandwich.
So, it becomes
[tex]73(1.2S)\\\\=73\times 1.2S\\\\=87.6S\ dollars[/tex]
Hence, The school band received 87.6S dollars on selling sandwiches at their last fundraiser.