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evablogger [386]
3 years ago
12

Notes: Each calculator is $5 dollars and the shipping cost $15. Write a linear relationship between that shows the cost and the

number of calculators purchased.

Mathematics
1 answer:
Veronika [31]3 years ago
3 0

Answer:

y = 5x+15

Step-by-step explanation:

The cost per calculator is 5

The shipping cost is 15

Let y = total cost

Let x = number of calculators

y = 5x+15


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How much more pizza is in a 12-in.diameter pizza than an 8-in.diameter pizza?
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62.8 in2

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Answer:

For x∈ {-∞,-3} y<0, below x-axis

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Step-by-step explanation:

f(x)=2x^{3}-26x-24

2x^{3}-26x-24=0

2x^{3}-26x-24=0\\2x^{3}-2x-24x-24=0\\2x(x^{2} -1)-24(x+1)=0\\2x(x+1)(x-1)-24(x+1)=0\\(x+1)(2x^{2} -2x-24)=0\\=> x+1=0 => x_{1}=-1\\

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=> x-4=0\\=> x_{2}=4\\=> x+3=0\\=>x_{3}=-3\\

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x∈ {-3,-1} y>0, above x-axis

x∈ {-1,4} y<0, below x-axis

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