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Answer:
always start at the origin and X go before Y
Answer:

Where y is the total amount earned, m the amount for each extended warranty and b the fixed cost and x the total amount of TVs
For this case the value of x = 16 since we have 16 Tvs with extended warranties and we can do this:

and solving for b we got:

And then we can conclude that she earns 60 for each TV
Step-by-step explanation:
For this case we can set a linear model like this:

Where y is the total amount earned, m the amount for each extended warranty and b the fixed cost and x the total amount of TVs
For this case the value of x = 16 since we have 16 Tvs with extended warranties and we can do this:

and solving for b we got:

And then we can conclude that she earns 60 for each TV
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Answer:
See below. The answer is incomplete, I couldn't post it.
Step-by-step explanation:
Considering a function
, it is said to be discontinuous when it has a hole or breaks, it means places where
cannot be evaluated. For example, when the denominator equals to 0, it is not defined.