Frank joined a fitness club. he paid a $50 registration fee, and dues are $12 per month. which expression can be used to find the average monthly cost of an x-month membership at the club?

The expression will be

Step-by-step explanation: Frank has to pay $50 as the registration fee. This amount is compulsory to be paid

Step 1: Dues for $12 months

Let the due to be paid every month be $x, so dues to be paid for 12 months will be 12x

Step 2: Expression for the average monthly cost for x-month will be

Expression:

Total cost = 50 + 12x

Expression:

the ratios are reciprocals im positive

step-by-step explanation:

they are all positive numbers so it wouldn't be the other ones