The following table shows the monthly charges for subscribing to the local newspaper.

number of months
1
2
3
4
5
total cost ($)
15.25
30.50
45.75
61.00
76.25

identify the independent and dependent variables in the newspaper subscription table.
a.
independent -- total cost
dependent -- number of months
c.
independent -- total cost
dependent -- month of the year
b.
independent -- cost per paper
dependent -- number of months
d.
independent -- number of months
dependent -- total cost