Question: You are on a tight budget and need to decide between the following 3 texting plans:
Plan A: Pay $0.10 per text
Plan B: Pay a fixed monthly fee of $15 for up to 500 texts per month and $0.08 for each text over the 500.
Plan C: Pay a fixed monthly fee of $25 for up to 1,000 texts per month and $0.05 for each text over the 1,000.
Requirements
a) Draw a graph of the total monthly cost of the three plans for different levels of texting.
b) Which plan should you choose if you expect to make:
-- 240 texts per month?
-- 780 texts per month?
-- 1,250 texts per month?