The function rule for this situation can be written as:
f(x) = 3x + 20
where x is the number of times Rex goes to the pool and f(x) represents the total amount of money he spends on pool membership and visits.
The initial cost of $20 is added to the product of the cost per visit ($3) and the number of visits.
What is the function rule for the following situations? Rex paid $20 for a membership to the pool and pays $3 each time he goes to the pool
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