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Mathematics, 01.11.2019 07:31 moncera

The phone company nextfell has a monthly cellular plan where a customer pays a flat monthly fee and then a certain amount of money per minute used on the phone. if a customer uses 210 minutes, the monthly cost will be $108.5. if the customer uses 620 minutes, the monthly cost will be $252.

a) find an equation in the form
y
=
m
x
+
b
,
where
x
is the number of monthly minutes used and
y
is the total monthly of the nextfell plan.


y
=

b) use your equation to find the total monthly cost if 979 minutes are used.

if 979 minutes are used, the total cost will be
dollars.
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