After 6 months, the total cost of tanya’s gym membership was $200. after 8 months, the total cost was $260. is this a proportional or non-proportional relationship? question 11 options: proportional; the constant of proportionality is $33.33/month proportional; the constant of proportionality is $32.50/month non-proportional; the rate of change is $20/month non-proportional; the rate of change is $30/month