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Masteriza [31]
3 years ago
11

Justin is selling cans of soda. It costs him $3 each week to advertise his business. He buys each can for $0.30 and sells each o

ne for $1.00. Write an equation to model the amount of profit, P, Justin makes from selling x cans of soda in one week.
A. P = x − 3
B. P = 0.3x − 3
C. P = 3x + 0.7
D. P = 0.7x − 3
Mathematics
2 answers:
prohojiy [21]3 years ago
6 0
The answer is d because he buys them for .3 and sells them for 1 so 100-30=70=.7 and then it costs him 3 to advertise so you subtract three
insens350 [35]3 years ago
5 0
The answer is D.

So if we are giving away 3$ a week that means we should have -3.

For each soda, we give 0.3$ and take 1$. That means we earn 0.7$ from each.

So we get 0.7 $ per soda and -3$ for advertisement.

Therefore, the equation is:  P = 0.7x - 3
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Now we need to check for extraneous solutions:

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3 years ago
HELP!
maksim [4K]

<u>Part A</u>

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<u>Part B</u>

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The x-coordinate of the vertex is x=-\frac{-7}{2(4)}=\frac{7}{8}

Substituting this back into the function, we get f\left(\frac{7}{8} \right)=4\left(\frac{7}{8} \right)^2 -7\left(\frac{7}{8} \right)^2 -15=-\frac{289}{16}

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The graph is shown in the attached image.

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irakobra [83]
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Answer:

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Step-by-step explanation:

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