One evening, Gemma saw three different phone-company ads. TeleTalk boasted a flat rate of 86 per minute. Americall charges 30€ per call plus be per minute. Cell Time charges 606 per call plus only 30 per minute.
a Gemma is planning a phone call that will take about 5 minutes
. Which phone plan should she use and how much will it cost?
b. Represent each phone plan with a table and a rule
. Then graph each plan on the same set of ares, where a represents time in minutes
and y represent the cost of the call in cents
. If possible use different colors to represent the diferent phone plans
.
c How long would a call need to be to cost the same with Tele Talk and AmerCallWhat about AmeriCall and CellTime?
d. Analyze the different phone plans
. How long should a call be so that AmerCall is cheapest