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erma4kov [3.2K]
3 years ago
11

a plumber charges $55 for a service call plus $35 per hour. if the plumber’s bill was $160, how many hours was he there?

Mathematics
2 answers:
FromTheMoon [43]3 years ago
8 0
It is three hours. If you go to a calculator, and add 55 + 35 you get $90. So, you keep adding +35 until you get your answer, and how many times you put (+35) is how many hours.
Allushta [10]3 years ago
5 0
He was there for 3 hours cause 3 x 35 = 105 but 105 + 55 = 160
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Let e f (x) = x2 – 2x - 4 What is the average rate of change for the quadratic function from X = -1 tox to x = 42 Enter your ans
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Answer:

The average rate of change of the given function

A(x) =  1

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given function f(x) = x² - 2x -4

And given that x = a = -1 and  x=b = 4

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<u><em>final answer:-</em></u>

The average rate of change of the given function

A(x) =  1

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