Answer:

Step-by-step explanation:
Find the <em>rate of change</em> [<em>slope</em>]:

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Answer:
[50, 410]
Step-by-step explanation:
If the plumber works 0 hours, he still charges $50, so that is the minimum of the range of charges.
If the plumber works 8 hours, his hourly charge of 8×$45 = $360 is added to his fixed charge of $50 for a total of $410. That is the maximum of the range of daily charges.
The range of the function is $50 to $410.
Answer:
If you were there four 8 hours they would charge you $15
Step-by-step explanation:
Answer:
The answer is 12ac^14/b^3