To begin, read the following problem statement.

Suppose Call $-$ Now offers an international calling plan that charges $$13$ per month plus $$0\mathrm{.}15$ per minute for calls outside the United States.

Requirements

Under this plan, what is your monthly international long$-$distance cost if you call Europe for

a$.20$ minutes?

b$.40$ minutes?

c$.80$ minutes?

Fill in the graph illustrating your total cost under this plan. Show your costs at $20,40,$ and $80$ minutes.

the cost for each scenario in Requirement $1.$

Requirement $1.$

a$.$ If your calls to Europe amounted to $20$ minutes, your monthly international long$-$distance cost would be $$16.$

b$.$ If your calls to Europe amounted to $40$ minutes, your monthly international long$-$distance cost would be $$19.$

c$.$ If your calls to Europe amounted to $80$ minutes, your monthly international long$-$distance cost would be $$25.$

you below the beginning of the next step. If so$,$ scroll back up to the top of the step.$)$