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vazorg [7]
3 years ago
13

Which of the following functions f(x) represent the order pairs:

Mathematics
1 answer:
sdas [7]3 years ago
3 0

Answer:

B.f(x) = 3x-1

Step-by-step explanation:

{(-2,-7), (-1,-4), (0,-1), (1,2), (2,5) are solutions of f(x) = 3x-1

Plug in

(-2,-7): f(x) = 3(-2) -1 = -6 - 1 = -7

(-1,-4): f(x) = 3(-1) -1 = -3 - 1 = -4

(0,-1): f(x) = 3(0) -1 =  - 1

(1,2): f(x) = 3(1) -1 = 3 - 1 = 2

(2,5): f(x) = 3(2) -1 = 6 - 1 = 5

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Murljashka [212]

Answer:

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Step-by-step explanation:

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2 years ago
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Time to paint the living room. The room measures 20 feet wide by 30 feet long by 12
chubhunter [2.5K]

The cost to paint the walls and the ceiling is $855

<h3></h3><h3>How much will it cost?</h3>

First, we need to find the area that will be painted.

The area of two of the walls is:

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The area of the other two walls:

A' = 30ft*12ft = 360ft²

The area of the ceiling is:

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We also need to subtract the areas of the two doors and the 4 windows.

Each door is 7ft by 3ft, so the area of each door is:

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Then the total area that will be painted is:

area = 2A + 2A' + A - 2a - 4a'

area = 2*( 240ft²) + 2*(360ft²) + 600ft² - 2*(21ft²) - 4*(12ft²)

area = 1,710 ft²

We know that we need two coats of paint to cover that area, and the cost per square foot of paint is $0.25, then the total cost is:

C = $0.25*2*(1,710) = $855

The cost to paint the walls and the ceiling is $855

If you want to learn more about areas:

brainly.com/question/24487155

#SPJ1

6 0
2 years ago
For every pound a company spends on advertising, it spends 43 pence on its website. Express
son4ous [18]

Answer:

43:100

Step-by-step explanation:

this is the simplest form

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Answer:

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Step-by-step explanation:

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Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage r
monitta

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% rate of decrease

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