The arithmetic sequence below shows the costs, in dollars, of riding 1, 2, 3, and 4 miles (and so on) in a certain taxicab.
5.30
,
7.80
,
10.30
,
12.80
,
...
Which function represents the
n
th
term of this sequence, for
n
=
1
,
2
,
3
,
4
,
...
?
The common difference between each term in the sequence is $2.50.
Therefore, the function representing the nth term of this arithmetic sequence is:
f(n) = 5.30 + 2.50(n-1)