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3 years ago

7

PLEASE HELP!! This is due today!! - The polynomial function shown has x-intercepts at x= -2, x=0 and x=1. Identify a possible eq

uation of this function. Giving 15-20 points!!! Pls show work and have a reasonable answer! Thank you :))

1 answer:

EleoNora [17]3 years ago

5 0

Answer:

f(x)=-x(x+2)(x-1)

Step-by-step explanation:

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A company can sell 2000 magazine subscriptions at $40 each. For each $5 increase in the price, it will sell 200 fewer subscripti

AVprozaik [17]

Let x denote the number of times at which price is increased by $5 for each magazine.
{Write an expression for the total revenue of company}
Let y denote the total revenue of the company,
y = (2000 - 200x) × ($40 + $5x)
{200x is the number of subscriptions being lost due to the price increases}
{$5x is the amount of increase in price of each magazine}

y = 2000($40) + 2000($5x) - 200x($40) - 200x($5x)
y = $80,000 + $10,000x - $8000x - $1000x^2
y = $80,000 + $18'000x - $1000x^2
{Since the coefficient of x^2 is (-1000), this graph is a sad face curve. This means the only stationary point on the curve is a maximum point}
{Differentiate y in terms of x}
dy/dx = $18,000 - $2000x
{dy/dx = 0 at stationary point, or when gradient = 0}
dy/dx = 0
$18,000 - $2000x = 0
$2000x = $18,000
x = 9 {dollar signs cancel out when they are divided}

Subscription price to attain maximum revenue should be: $40 + (9 × $5) = $95

Hope this helps!

7 0

3 years ago

nadya68 [22]

Answer:

$\frac{(\frac{3}{5}*1000) }{6}$

Step-by-step explanation:

First, let's find out how many words Maria has left to write. If she has already finished 2/5 of her essay, she has 3/5ths left to write. We can do 3/5 times 1000 to find out how many words are left.

$\frac{3 }{5} * \frac{1000}{1}$

$\frac{3000}{5}$

$600$

Thus, there are 600 words left to write.

Now to find the amount of time, we can find how take to write 600 words at a pace of 6 words per minute by dividing 600 by 6.

$\frac{600}{6}$

$100$

It will take 100 minutes for Maria to write the rest of her essay. Now let's think about an expression that tells us this information. It sounds like your questions is supposed to have options, but I doesn't seem like you've posted them, no worries however.

So first, the amount she has left to write.

$(\frac{3}{5} * 1000)$

We know this is 600, but we don't have to simplify it for the expression.

Now thinking back to how we found the time, we can divide this '600' by 6.

$\frac{(\frac{3}{5}*1000) }{6}$

This is the expression that shows the amount of time it will take to write the rest of the essay.

$\frac{((1-(\frac{2}{5})*1000) }{6}$ is also a valid solution.

3 0

3 years ago

Read 2 more answers

Simplify -2x^3yxxy^2

Readme [11.4K]

Answer:

-2x^(5)y^(3)

Step-by-step explanation:

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3 years ago

PLEASE HELP ASAP!! will mark brainlest

son4ous [18]

Step-by-step explanation:

1/2 × height × base

1/2 × 6.3 × 8

6.3 × 4 = 25.2 ans.

therefore, area of the ∆ is 25.2 ft ².

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2 years ago

A person's resting heart rate is typically between 60 and 100 beats per minute. Noah looks at his watch, and counts 8 heartbeats

Pavlova-9 [17]

Answer:

No, his heartbeat is 48 beats per minute (12 beats below the minimum beats per minute of a typical person's heartbeat (60 beats)).

Step-by-step explanation:

Every 10 seconds, Noah's heart beats 8 times.

Therefore, every 1 minute, his heart beats 48 times.

Noah's heartbeat is below a typical person's resting heart rate.

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4 years ago