A mobile phone plan has a base fee of $50 per month. The monthly cost increases by $10 for every gigabyte of data used. Let c re
present the monthly cost and g the gigabytes of data used.
2 answers:
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Answer:
D
Step-by-step explanation:
using the rule of logarithms
log x - log y ⇔ log ( )
then
(
) =
a -
d