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Studentka2010 [4]
3 years ago
5

Which situation can be modeled by a linear function? * 1 point The value of a car decreases by 10% every year. The number of fis

h in a lake doubles every 5 years 2 liters of water evaporate from a pool everyday The amount of caffeine in a person's body decreases by 1/3 every 2 hours.
Mathematics
1 answer:
Sergio [31]3 years ago
8 0

Answer:

The third equation where 2 liters of water evaporate from a pool every day is linear

Step-by-step explanation:

One way to think about this is that the other equations would require exponents, or solving non-algebraically would require know the subsequent output.

However, if 2 liters of water evaporate from a pool every day, the equation would be y= number of liters in pool - 2x

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The Pear company sells pPhones. The cost to manufacture x pPhones is C ( x ) = - 21 x² + 67000 x + 20006 dollars (this includes
pishuonlain [190]

Answer:

Company should produce 8000 phones for the maximum profit.

Step-by-step explanation:

Function representing cost to the manufacturer is,

C(x) = -21x²+ 67000x + 20006

Function that represents the revenue generated is,

R(x) = -28x² + 179000x

Function representing profit to the company,

Profit = Revenue generated - Cost price

         = -28x² + 179000x - (- 21x² + 67000x + 20006)

         = -28x² + 21x² + 179000x - 67000x - 20006

 P(x)  = -7x² + 112000x - 20006

Since this function is a quadratic function therefore, the maximum price generated will be for

x=-\frac{b}{2a}

From the given quadratic function, a = (-7), b = 112000 and c = -20006

Therefore, for x=-\frac{112000}{2\times (-7)}

Or x = 8000 the profit to the company will be maximum.

That means pear company should produce 8000 phones for the maximum profit.

7 0
3 years ago
30 points plz help<br> Use the draggable points to graph the equation<br> 1<br> y=<br> 2x+3
Nikitich [7]

Answer:

Yeah its 7 because when you add 3+2=5, and x is 2, its 7

3 0
3 years ago
The difference of twice a number and 3 is -21 translated
Westkost [7]

Answer:

2x-3=-21.

2x=-21+3.

2x=-18.

x=-18/2.

x= -9.

7 0
4 years ago
Read 2 more answers
A box of Cookies original cost $2. 15. It is on sale for 15% off. What is the cost of the cookies after discount ?
harina [27]

Answer:

$1.83

Step-by-step explanation:

$2.15 (original price of cookies) - 15% (discount) = $1.83 (rounded since the original total was: 1.8275)

4 0
3 years ago
HELP. Pleaseee. I have no idea what this means.
Vilka [71]

Answer:

2

Step-by-step explanation:

roots are the intercepts at the x axis I believe

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3 years ago
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