Part A: Remediation, Near Mastery, Mastery Identify the appropriate domain of the situation below. Feel free to graph, create a table, or
any other visual to help you find the domain.
Your cell phone plan charges $0.20 for each text message you send or receive. Your parents pay
your bill and put a $25 cap on your texting charges per month. If c(t) = 0.2t is a function that
models the cost of your texts t, what is the appropriate domain of this function?
Enter your answer here.
Part B: Exceeds Mastery
Anthony is throwing a birthday party for his coworker Erin. He has a $20 budget for balloons
and found that at Party City he can buy balloons for $3.23 each (tax included). Anthony creates
a function for the cost of balloons C (b) = 3.23b.
Anthony believes that the domain of this function is any whole number, since he can't buy
negative amounts of balloons and he can't buy parts of balloons.
Is Anthony correct about the domain? Is there any other restriction on domain?
Explain your answer fully.