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Use the following function rule to find f(121)f(121).\newlinef(x)=8xf(x) = 8\sqrt{x}\newlinef(121)=f(121) = _____

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Full solution

Q. Use the following function rule to find f(121)f(121).\newlinef(x)=8xf(x) = 8\sqrt{x}\newlinef(121)=f(121) = _____
  1. Identify Function and Input: Identify the function and the input value.\newlineWe are given the function f(x)=8xf(x) = 8\sqrt{x} and we need to find the value of f(121)f(121).
  2. Substitute Input into Function: Substitute the input value into the function.\newlineTo find f(121)f(121), we substitute 121121 for xx in the function:\newlinef(121)=8121f(121) = 8\sqrt{121}
  3. Calculate Square Root: Calculate the square root of 121121. The square root of 121121 is 1111, since 11×11=12111 \times 11 = 121.
  4. Multiply by 88: Multiply the square root by 88. Now we multiply the square root we found by 88: f(121)=8×11f(121) = 8 \times 11
  5. Perform Final Multiplication: Perform the multiplication to find the final answer. f(121)=88f(121) = 88

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