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3 years ago

Help with the following attachment

Mathematics

1 answer:

GenaCL600 [577]3 years ago

3 0

None of the answer choices makes any sense. (You should have your teacher show you how to select the correct choice.)

_____

Answers that are closer to the plotted points are ...

... A = -0.9, B = -9/16, C = -0.4, D = -1/16

The attachment shows these points plotted. As you can see, even these values aren't quite right.

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What is the exponential function modeled by the following table?

steposvetlana [31]

Answer:

$f(x)=9^{x-1}$

Step-by-step explanation:

The general form of the exponential function is,

$y=ab^x$

The points on the graph will be,

$(2,9),(3,27),(4,81)$

Putting the points in the function,

$9=ab^2$ -----------------------------------1

$27=ab^3$ ---------------------------------2

Dividing equation 2 by equation 1,

$\Rightarrow \dfrac{27}{3}=\dfrac{ab^3}{ab^2}$

$\Rightarrow 9=\dfrac{b^3}{b^2}$

$\Rightarrow b=9$

Putting the value of b in equation 1,

$\Rightarrow a(9)^2=9$

$\Rightarrow a=\dfrac{9}{9^2}$

$\Rightarrow a=\dfrac{1}{9}$

Putting all the values,

$\Rightarrow y=\dfrac{1}{9}\cdot 9^x$

$\Rightarrow y=9^{x-1}$

8 0

3 years ago

Read 2 more answers

Kato must write 60 percent of a 20-page report by tomorrow. Kato wants to determine the number of pages that he needs to write b

AlekseyPX

Answer:

Kato must write 12 pages of the report

Step-by-step explanation:

We have given that total number of pages in report = 20

It is given that Kato must write 60 % of the that report tomorrow

We have to find the number of pages which kato write tomorrow

So number of pages which kato write tomorrow $=\frac{20\times 60}{100}=12$

So kato must write write 12 pages of the report tomorrow because 60 % of 20 is 12

4 0

3 years ago

Read 2 more answers

In the proportion 35/140 = 5/x which number is equal to x in the proportion

prisoha [69]

35/140=0.25
5/20=0.25
x=20

6 0

3 years ago

Read 2 more answers

Write a real-world problem that is solved by an equation and then solve (show work).

ololo11 [35]

A company is selling books. It has to pay $500 to start printing the books, and once they have done that, the books sell at $14.99 each. How many books must they sell to make a profit?

First we would model an equation. X will be the amount of books sold, and Y will be profits (in dollars obv). They had to pay $500 before they could start selling, so we must account for that too.

This equation would be $y=14.99x-500$ because for every book sold, X increases by 1, increasing Y by 14.99

The answer would be 34 books sold in order to turn a profit. (500/14.99=

6 0

3 years ago

For all parts of this question, use the function y - 3 = -2(x - 2)

Elden [556K]

Answer:

-3

-7

A step-by-step explanation

5 0

3 years ago