the admission fee to a museum is $12.50 per adult, $8 per child, and $6.50 per senior citizen. A tour group consists of m nonsenior adults, 95/4m
+6) children, and 8n seniors citizens

a) What is the total admission fee for the group? 
b) write an expression for the admin admission fee for children in the group subtracted from the combined admission fees of the nonsenior adults and senior citizens in the group 
c) Evaluate your expression form b  when m=24 and n=4