Mosteller's formula : `A=sqrt(hw)/60`
Current's formula : `A=(4+w)/30`
The formulas above are used in medicine to estimate the body surface area A, in square meters, of infants and children whose weight w ranges between 3 and 30 kilograms and whose height h is measured in Centimeters.
Based on Current’s formula, what is w in terms of A ?

Options

A. w = 30A − 4
B. w = 30A + 4
C. w = 30(A − 4)
D. w = 30(A + 4)

Explanation

To find \( w \) in terms of \( A \) based on Current's formula \( A = \frac{4 + w}{30} \), we will follow these steps:

### Step 1: Write down the Current's formula
The Current's formula is given as:
\[ A = \frac{4 + w}{30} \]

### Step 2: Multiply both sides by 30
To eliminate the fraction, multiply both sides of the equation by 30:
\[ 30A = 4 + w \]

### Step 3: Isolate \( w \)
Now, we need to isolate \( w \) on one side of the equation. To do this, subtract 4 from both sides:
\[ w = 30A - 4 \]

### Final Result
Thus, \( w \) in terms of \( A \) is:
\[ w = 30A - 4 \]

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