Fiona decides to join a gym for a minimum of one month to train for a triathlon. the gym charges a joining fee of $100 and a monthly fee of $38. if x represents the number of months that fiona is a member of the gym, the equation below can be used to determine c, her total membership fee for that duration of time: 100 + 38x = c fiona has allocated a maximum of $328 to spend on her gym membership. which number line shows the possible number of months that fiona can be a member of the gym?