The function f(x) represents the total cost for x tickets for a carnival, including the entry fee.

f(x)=0.50x+4

what is the value of f(20), and what does it mean in the context of the situation?
a.
f(20)=32; this means that it costs $20 to purchase 32 tickets and pay the entry fee.
b.
f(20)=14; this means that it costs $14 to purchase 20 tickets and pay the entry fee.
c.
f(20)=14; this means that it costs $20 to purchase 14 tickets and pay the entry fee.
d.
f(20)=32; this means that it costs $32 to purchase 20 tickets and pay the entry fee.