Question 158072
Admission to a park is x dollars per person for the first 3 people in a group and y dollars per person for each additional person.
   write a formula for the total cost c when the number of people in a group p
 is more than 3
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3x would be the cost for the first three people.


ny would be the cost of the rest, for which n would be the number of people in the group minus three, because three people are already paid for.


There are p people in the group, so ny becomes (p-3)y.


Add those prices together to get the total price for one group.


{{{C(p)=3x+(p-3)y}}}