a wildlife center presents a program about birds of prey. the center charges a basic fee of $325 and an additional fee for each
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Let 
be the number of 49 cent stamps bought and 
be the number of 34 cent stamps bought. We can set up the following equations using the information above:
Substituting the first equation into the second equation will give you the following:
Solving for B will give you the number of 34 cent stamps purchased, and then you can figure out the number of 49 cent stamps purchased.
Substituting the first equation into the second equation will give you the following:
Solving for B will give you the number of 34 cent stamps purchased, and then you can figure out the number of 49 cent stamps purchased.