A particular computer takes 11 minutes to download a 33-minute TV show. How long will it take the computer to download a 2-hour
2 answers:
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To find the markup, substract the price at which the car was bought from the price at which the car was sold:
To find the markup as a percentage from the original price, set 20,480 to be equal to 100%. If <em>x%</em> represents 6328, then:
To the nearest tenth, 30.898... = 30.9.
Therefore, the markup is equal to 30.9%.
<h3>Given</h3>
- f(5) = -1
- f(0) = -5
- write the linear function f(x)
A linear function is the equation of a line. Here, you are given two points on the line, one of which is the y-intercept, and asked to write the equation. It can work reasonably well to use the 2-point form of the equation of a line.
For points (x1, y1) and (x2, y2), the equation of the line through them can be written as
... y = (y2 -y1)/(x2 -x1)·(x -x1) + y1
When it is possible to use x1 = 0, this is simplified somewhat, so we choose
... (x1, y1) = (0, -5) . . . . . . from f(0) = -5
... (x2, y2) = (5, -1) . . . . . .from f(5) = -1
Putting these values in the above formula, we get ...
... y = (-1 -(-5))/(5 - 0)·(x -0) -5
... y = 4/5x -5 . . . . . simplified
This can be put in the desired functional form using f(x) instead of y:
... f(x) = 4/5x -5