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Artyom0805 [142]
3 years ago
10

What is the domain of the function f(x) = 3|x + 4| + 1? all real numbers all real numbers less than or equal to −4 all real numb

ers greater than or equal to 1 all real numbers greater than or equal to −4
Mathematics
2 answers:
olganol [36]3 years ago
3 0
All real numbers..................<span />
MrRa [10]3 years ago
3 0

Answer:

The correct option is A.

Step-by-step explanation:

The vertex form of an absolute function is

g(x)=a|x-h|+k

Where, (h,k) is vertex.

Domain is the set of input values.

The given function is

f(x)=3|x+4|+1

It is the vertex from of an absolute function. Here h=-4 and k=1, so the vertex of the function is (-4,1).

These functions are defined for all real values of x. So, the domain of the given absolute function is all real numbers

Therefore the correct option is A.

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On average, 240 customers arrive at a bank every morning (8AM - noon), but they do so randomly (i.e., not exactly every minute).
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Answer:

3.4 minutes

Step-by-step explanation:

Every morning there are expected 240 customers who arrive at bank for the customer service. There are on average 240 customers arriving to the bank every morning. There are total 5 bank tellers and they take average 3 minutes to help customer. The average time each bank teller spends on satisfying a customer will be calculated using the linear model,

Using wait time calculator:

Average service time / standard deviation

Ce = 3/1.5 = 2

The spent time on a customer is 3.4 minutes.

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