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Use the following function rule to find f(4)f(4).\newlinef(x)=7xf(x) = 7 - \sqrt{x}\newlinef(4)=f(4) = _____

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Q. Use the following function rule to find f(4)f(4).\newlinef(x)=7xf(x) = 7 - \sqrt{x}\newlinef(4)=f(4) = _____
  1. Identify Function and Input: Identify the function and the input value.\newlineWe are given the function f(x)=7xf(x) = 7 - \sqrt{x} and we need to find the value of f(4)f(4).
  2. Substitute Input into Function: Substitute the input value into the function.\newlineTo find f(4)f(4), we substitute xx with 44 in the function f(x)f(x).\newlinef(4)=74f(4) = 7 - \sqrt{4}
  3. Calculate Square Root: Calculate the square root of the input value.\newlineThe square root of 44 is 22.\newline4=2\sqrt{4} = 2
  4. Complete Calculation: Complete the calculation for f(4)f(4).\newlineNow we subtract the square root of 44 from 77.\newlinef(4)=72f(4) = 7 - 2\newlinef(4)=5f(4) = 5

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