Answer:
Answer is D.
Step-by-step explanation:
do 4 times every value in the ( )
If you have learned how to find the line of best fit manually, then you can do it that way. Perhaps you may want to just find a line that can connect at least two of the points and I believe that that line will be able to represent the other points because, in general, the points are pretty close to one another.
If you don't want to do it manually and have a graphing calculator (which I recommend) then you can use that to find the line of best fit (and if you want then you can see how precise your points are with your r^2 value). Or there is a website (http://illuminations.nctm.org/Activity.aspx?id=4186), which you can use to help you to find the equation of that particular line.
Once you have that done, then you can substitute 2009 for the x value in the equation and then see what y value the equation produces. That will then be your answer :)
Answer:
F(a) =2a^2+4a+5
Step-by-step explanation:
just put x= a
Answer:
The actual space shuttle is 66 feet tall
Step-by-step explanation:
scale of 1 inch : 12 feet represent the scale of a space shuttle.
It means it has a representation of 1 inch on paper then actual = 12 feet.
But then if the paper(model) changes to 5.5 inches. The actual representation on land will be
Let me write out the equation
1 inch = 12 feet
5.5 inch =( 5.5 inch *12 feet)/1 inch
5.5 Inch= 5.5 * 12 feet
5.5 inch = 66 feet
