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Since "X" is the number of years since 1980, I would convert the years and subtract each of them by 1980. For example, in 1985, the cost was $1.06. Therefore, I would use the number "5" since that is how many years it has been since 1980. This applies to all of the years listed.

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In order to find the equation of the line (based off the data), you would have to use the equation model:

$$y=mx+b$$

The variable "m" represents the slope of the line, while "b" represents the y-intercept.

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The first step is to find the slope (m) by using this formula:

slope = △X/△Y

This is how you solve for the slope:

slope = △Y/△X → (y2-y1)/(x2-x1)

After substituting all of the values, you would get this for your slope:

$$y=1/25x+b$$

According to this "almost-complete" equation, the slope is equal to 1/25.

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Now, "b" is equal to the y-intercept of the graph.

To find the "b" variable, I would look at the table above. The first point listed is (0,1). Therefore, you know that the origin of the graph is at 0. As a result, The y-intercept is equal to 1.

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FINALLLYYY! You have the information you need to answer your question! LOL

The model of the equation is the following:

$$y=mx+b$$

m = 1/25

b=1

soooooooo........

The equation is y = 1/25x + 1

That sounds gay in so many ways

Well, 40% of 50 can be written as:

$${\mathtt{0.4}}{\mathtt{\,\times\,}}{\mathtt{50}} = {\mathtt{20}}$$

And 50% of forty can be written as:

$${\mathtt{0.5}}{\mathtt{\,\times\,}}{\mathtt{40}} = {\mathtt{20}}$$

So yes, they are the same.

add four on both sides 

$${\sqrt{{\mathtt{68\,784\,678\,546.854\: \!685\: \!4}}}} = {\mathtt{262\,268.333\: \!099\: \!622\: \!771\: \!442\: \!4}}$$

This lets you know that you can't just measure a piece of the map and use a scale factor to determine the actual size.

$${\mathtt{42}}$$

$${\mathtt{y}} = {\mathtt{0.953\: \!802\: \!281\: \!368\: \!82}}{\mathtt{\,\small\textbf+\,}}{\mathtt{0.033\: \!269\: \!961\: \!977\: \!186}}{\mathtt{\,\times\,}}{\mathtt{x}}$$

$${\mathtt{1\,234\,567\,890}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1\,234\,567\,890}} = {\mathtt{2\,469\,135\,780}}$$

yea. it wont work.. i need more numbers!!!

$$\left({\frac{{\mathtt{1\,365}}}{{\mathtt{2\,100}}}}\right){\mathtt{\,\times\,}}{\mathtt{100}} = {\mathtt{65}}\%$$

Yes when Shift is used.

Pythagorean theorem: $$a^2+b^2=c^2$$

a = leg#1

b = leg#2

c = hyptenuse

If "a" is equal to 3, and "b" is equal to 4, you would do this:

$$(3)^2+(4)^2 = c^2$$

Simplify the left side of the equation:

$$9+16 = c^2$$

Add the two numbers:

$$25=c^2$$

To find c (the hypotenuse), you would square both sides and then solve to get this"

$$5=c$$

Therefore, the hypotenuse is equal to 5 units.

This is just an example. However, you can use this formula for ANY number. I hope this helps! :)

$$\mathrm{\ }$$

$${\frac{{\mathtt{2}}}{{\mathtt{5}}}}{\mathtt{\,\times\,}}{\mathtt{100}} = {\mathtt{40}}$$

the answer is 90

$${\mathtt{62}}{\mathtt{\,\times\,}}{\mathtt{88}} = {\mathtt{5\,456}}$$

Yes use a Protracter.

0.5=5%

5%>4%

0.5 is bigger

9 square root (2) =

9+10=19, unless you want to be silly it's 21

This is everywhere

Shrek is love Shrek is life

$${\mathtt{4\,010\,392\,426}}{\mathtt{\,-\,}}{\mathtt{314\,424\,837}} = {\mathtt{3\,695\,967\,589}}$$