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A telephone company offers a monthly cellular phone plan for $20.00. It includes 350 free minutes plus $0.25 per minute for additional minutes. The following
function gives the monthly cost for a subscriber, where x is the number of minutes used.
20.00
if OS X s 350
C(x) =
if x > 350
= { 20.00 +0.256x - 350)
Simplify the expression in the second line of the piecewise function. Then use point-plotting to graph the function
Fill in the simplified expression below.
C(x) =
{
20.00
if Os x s350
if x > 350
(Use integers or decimals for any numbers in the expression. Do
not factor)
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