Word Problem

Question

The table shows the price of concert tickets purchased online. The cost includes a ticket price of $20 in addition to an order processing fee.
Tickets Purchased    2   3   4    5
Cost of Order $       55 75 95 115

 

The function P = 23t represents the cost of tickets in dollars when purchased at the door. P is the total cost of the tickets and t is the number of tickets purchased. Is it cheaper to buy 5 tickets online or at the door?
[A] It is cheaper to buy 5 tickets online.
[B] It is cheaper to buy 5 tickets at the door.
[C] Both options cost the same for 5 tickets.  

Answer 1

If you look at the chart, the price to purchase 5 tickets online is $115

 

To figure out the price of 5 tickets at the door, you must substitute 5 in for "t" in the function given 

 

P = 23t

P= 23*5

P=$115

 

so the cost to buy 5 tickets at the door is $115, which is the same cost as buying 5 tickets online--the correct answer choice is C