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3 years ago

I need help badly :[

Mathematics

2 answers:

Fittoniya [83]3 years ago

8 0

After April 13th Raul would have $535.25 on his account

explanation:

on 4/2 the balance was $539.50
on 4/2 $35.50 was taken out of the account
on 4/6 $23.75 was taken out of the account
on 4/13 $55.00 was added to the account

that means in all, $59.25 was taken out of the account
so, taking it out of the original balance,
539.50 - 59.25 = $480.25
but $55.00 was then added to the account so we add it to the new balance.
$480.25 + $55.00 = $535.25

so, that’s means there is now $535.25 on the account

n200080 [17]3 years ago

4 0

535.25 is the answer bc you add the deposits and subtract the withdrawals

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olga nikolaevna [1]

Cost = 15x + 2000
Earning = 35x

At break even, cost = earning

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20x = 2000
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100 rides are needed to break even.

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3 years ago

3, 4, 5, 7, 9, 10, 2, 8<br><br> Mean__<br> Median__<br> Range__

Fudgin [204]

Answer:

Mean: 6

Median: 6

Range: 8

Step-by-step explanation:

Mean is found by adding up all the values in the set and dividing by the amount of numbers in the set (in this one there are 8) 2+3+4+5+7+8+9+10=48. 48 divided by 8 = 6.

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5 0

3 years ago

Read 2 more answers

A community bird-watching society makes and sells simple bird feeders to raise money for its conservation activities. The materi

blondinia [14]

Answer:

The required function is: $P(x)=-3x^2+78x-360$

The price for each feeder to maximize profit should be $13.

The maximum weekly profit is $147

Step-by-step explanation:

Consider the provided information.

Part (A)

The materials for each feeder cost $6, and the society sells an average of 30 per week at a price of $10 each.

Let x be the price per feeder.

Profit = Revenue - cost

So the profit per feeder is $x-6$

If we increase then for every dollar increase, it loses 3 sales per week.

This can be written as:

$30-3(x-10)$

$30-3x+30$

$-3x+60$

Where x-10 represents the increase in price and 3 represents the decrease in sales per week.

Thus the profit will be:

$P(x)=(x-6)(-3x+60)$

$P(x)=-3x^2+78x-360$

Hence, the required function is: $P(x)=-3x^2+78x-360$

Part (B) What price should the society charge for each feeder to maximize profits? What is the maximum weekly profit?

The above function is a downward parabola so the maximum will occur at vertex.

The x coordinate of the vertex of parabola is: $x=\frac{-b}{2a}$

Substitute a=-3, b=78 and c=-360 in above.

$x=\frac{-78}{2(-3)}=13$

Hence, the price for each feeder to maximize profit should be $13.

Now substitute the value of x in $P(x)=-3x^2+78x-360$

$P(x)=-3(13)^2+78(13)-360=$147$

Hence, the maximum weekly profit is $147

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Answer:

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Answer:

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