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There's a roughly linear relationship between the length of someone's femur and their expected height. This relationship can be expressed using the formula [tex]h=56.7+2.37f[/tex], where [tex]h[/tex] represents the expected height in centimeters and [tex]f[/tex] represents the length of the femur in centimeters.

What is the meaning of the [tex]f[/tex]-value when [tex]h=170[/tex]?

A. The femur length for someone with an expected height of 47.8 centimeters.
B. The change in expected height for every one additional centimeter of femur length.
C. The femur length for someone with an expected height of 170 centimeters.
D. The expected height for someone with a femur length of 170 centimeters.

Answer :

To solve the problem, we need to determine what the value of [tex]\( f \)[/tex] (the femur length) is when the expected height [tex]\( h \)[/tex] is 170 centimeters, using the relationship [tex]\( h = 56.7 + 2.37 f \)[/tex].

Let's break it down step-by-step:

1. Understand the Formula: The formula given is [tex]\( h = 56.7 + 2.37 f \)[/tex], where:
- [tex]\( h \)[/tex] is the expected height in centimeters.
- [tex]\( f \)[/tex] is the length of the femur in centimeters.

2. Substitute the Given Height: We want to find [tex]\( f \)[/tex] when [tex]\( h = 170 \)[/tex] cm. So, substitute 170 for [tex]\( h \)[/tex] in the equation:
[tex]\[
170 = 56.7 + 2.37 f
\][/tex]

3. Solve for [tex]\( f \)[/tex]: To find [tex]\( f \)[/tex], we need to isolate it on one side of the equation.
- First, subtract 56.7 from both sides of the equation:
[tex]\[
170 - 56.7 = 2.37 f
\][/tex]
[tex]\[
113.3 = 2.37 f
\][/tex]
- Next, divide both sides by 2.37 to solve for [tex]\( f \)[/tex]:
[tex]\[
f = \frac{113.3}{2.37}
\][/tex]

4. Calculate the Femur Length: Perform the division:
[tex]\[
f \approx 47.81
\][/tex]

Thus, the femur length [tex]\( f \)[/tex] for someone with an expected height of 170 centimeters is approximately 47.81 centimeters. The correct interpretation of the [tex]\( f \)[/tex]-value in this context is: "The femur length for someone with an expected height of 170 centimeters."

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Rewritten by : Barada