Tom wants to order tickets online so that he and three of his friends can go together to a water park. the cost of the tickets is $16.00 per person. there is also a $2.50 one-time service fee for ordering tickets online. write an expression in terms of n that represents the cost for ordering n tickets online. what is the expression? use your expression to find the total cost for ordering 4 tickets online.

Expression is:16n+2.50

For buying 4 tickets: 66.50

Step-by-step explanation:

You first have to set up the equation and each ticket cost 16 and you have to buy sixteen that is why it is 16n and then you have to pay 2.50 because you are buying online. Then you put four in for N because you are getting 4 tickets. Finally multiply 16 and 4 then add 2.50.

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93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this