Two mobile phone companies have different data rates. Company A has a rate of
$100 for unlimited data, and Company B has a flat fee of $20 plus $5 per gigabyte of data. The point of intersection between these two linear relations is (16, 100).
What does this point of intersection represent?
a) Both phone companies would charge $16 per gigabyte used with a bill of $100.
b) Both phone companies would charge $100 if the customer used 16 gigabytes of data.
c) Both companies would charge $100 with a flat fee of $16.
d) Both companies would charge $16 per gigabyte if the customer used 100 gigabytes.
