Which of the tables represents a function?

table a

input

output

4 3
3 2
2 1

table b

input

output

1 3
3 5
3 7

table c

input

output

0 0
1 4
1 5

table d

input

output

4 1
4 2
4 3

table a

table b

table c

table d

In 2000 the average price of a football ticket was $48.28. during the next 4 years, the proce increased an average of 6% each year.a) write a model giving the average price (p), in dollars, of a ticket (t) in years after 2000.b) graph the model. estimate the year when the average ticket price was about $60