Tony bought 3 tickets to a concert for $78. How much will it cost for 6 tickets to the concert if all tickets have the same unit price? Use the table below to help determine the missing value:

Number of Tickets 3 4 5 6
Cost $78 $104 $130 ?
(3 points)
Select one:

a.
$136

b.
$146

c.
$156

d.
$234