Marti and her family will be joining a new family share plan for their cellphone service. The family share plan has a monthly flat fee of $150.00. The share plan may include as few as 2 cellphone lines and as many as 5 cellphone lines. The family will split the monthly fee equally amongst each plan member. a. Write an equation that models the situation. Let x represent the number of cellphone lines and let y represent the monthly cost per plan member.

b. What is the monthly cost per plan member if Marti’s family has the maximum number of cellphone lines
allowed?

c. What is the monthly cost per plan member if Marti’s family has the minimum number of cellphone lines
allowed?

d. How many cellphones lines does Marti’s family have if the monthly cost per plan member is $50?

e. What is a reasonable domain for the situation?

f. What is a reasonable range for the situation?