Answer:
$84
Step-by-step explanation:
First, let's set up an equation to solve:
each visit is $3, so we can use v to stand for the number of visits:
3v
The center charges a $30 fee so we need to add that to the previous term:
3v+30
This will altogether cost c, or the amount of money:
3v + 30 = c
How we can use substitution to solve:
3v + 30 = c
3 ( 18 ) + 30 = c
54 + 30 = c
84 = c
