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Radda [10]
3 years ago
8

The sales at a particular bookstore grew from $2104 million in 2000 to $3881 million in 2005. Find an exponential function to mo

del the sales as a function of years since 2000. Give your answer using the form B = Boat.
Mathematics
1 answer:
zavuch27 [327]3 years ago
4 0
The usual exponential growth equation is given by: 

y = C * e^kt,  where k greater than 0. 

t is the number of years, in this case (2005 - 2000), t = 5 years
C is a constant at x = 0
k is the growth constant

There will be two equations:

2104 million = C * e^k(0)

so, C = 2104 million, the other equation is:

3881 million = 2104 million * e^k(5)

solve for k:
k= 0.12245

The exponential growth equation is:

y = 2104 million * e^(0.12245*t)

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Anarel [89]

Answer:

(x - 5)(x + 3)

Step-by-step explanation:

to solve x² - 2x = 15, we need to get all the terms on one side so we can solve the quadratic equation using factoring. to do this, we subtract 15 from both sides

x² - 2x = 15

- 15         -15

x² - 2x - 15 = 0

now we can factor. we need 2 numbers that when multiplied together give us -15, and when those 2 numbers are added together we get -2

because we have a -15, we can assume that one number must be negative and the other positive, as a negative times a postive is a negative.

we can use 3 and -5 as factors and test it out. we put x in front because we have an x²

(x - 5)(x + 3) < we can FOIL to check to see if this is correct. its not mandatory to check but when you arent sure of the answer you can FOIL it out

FOIL stands for: First, Outside, Inside, and Last terms

F: (x - 5)(x + 3) = x²

O: (x - 5)(x + 3) = -3x

I: (x - 5)(x + 3) = 5x

L: (x - 5)(x + 3) = -15

x² + 3x - 5x - 15 < subtract 3x from 5x

x² - 2x - 15

this checks out, so our answer is (x - 5)(x + 3)

6 0
3 years ago
Read 2 more answers
HELP ME PLZZZZZ I NEED THIS RNNNNNNNNNN
KiRa [710]

Answer:  I think its B or C bc if you subtract them on the 180 you will get the same answer and by just adding them back again.

Step-by-step explanation:

8 0
3 years ago
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solmaris [256]

Answer:

The expression contains FOUR terms and each term contains TWO factors.

Step-by-step explanation:

In algebra, the word term refers to single numbers(10),  variables<em>(</em><em>y</em><em>)</em> also the product of the two(<em>10y</em>).

In the given expression : <em>ab+cd+ef+gh .</em>

We have four terms;

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A factor is part of a product. For the given equation we Four terms each term will have two factors.

  • <em>ab</em>- is a product of factor a and b
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Dahasolnce [82]

Answer:

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multiply through by 12 ( the LCM of 3 and 4 ) to clear the fractions

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Ostrovityanka [42]
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