A person's body mass index (BMI) is a function of their weight W (in kg ) and height H (in m ) g

step 1 In this problem, we are covering using a 2 -variable function. So we are given the function for

A person's body mass index (BMI) is a function of their...

A person's body mass index (BMI) is a function of their weight $W$ (in $\mathrm{kg}$ ) and height $H$ (in $\mathrm{m}$ ) given by $B(W, H)=W / H^{2}$.
What is the BMI of a $1.72 \mathrm{m}$ tall man weighing $72 \mathrm{kg} ?$

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Key Concepts

Exponential Operations

Exponential operations involve raising numbers to a power, which is essential in many formulas. For the BMI calculation, the height is squared (raised to the power of 2), a key step that adjusts the weight measurement to account for differences in body size, making the BMI a more standardized indicator.

Body Mass Index (BMI)

BMI is a numerical value calculated from a person’s weight and height to indicate whether they are underweight, normal weight, overweight, or obese. It provides a general measure for assessing the risk of health issues related to body weight. Although it does not directly measure body fat, it is commonly used as a screening tool in both clinical and research settings.

Function Evaluation and Substitution

Function evaluation involves determining the output of a function for specific input values. In a mathematical function, such as the BMI formula, substitution refers to the process of replacing the variables with actual numbers—in this case, the weight and height of a person—to compute the desired result.

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