Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

Use the following function rule to find f(9)f(9).\newlinef(x)=9x+4f(x) = 9\sqrt{x} + 4\newlinef(9)=f(9) = _____

Full solution

Q. Use the following function rule to find f(9)f(9).\newlinef(x)=9x+4f(x) = 9\sqrt{x} + 4\newlinef(9)=f(9) = _____
  1. Identify function rule and input: Identify the function rule and the input value.\newlineThe function rule given is f(x)=9x+4f(x) = 9\sqrt{x} + 4, and we need to find the value of f(9)f(9).
  2. Substitute input into rule: Substitute the input value into the function rule.\newlineTo find f(9)f(9), we substitute xx with 99 in the function rule:\newlinef(9)=99+4f(9) = 9\sqrt{9} + 4
  3. Calculate square root: Calculate the square root of the input value.\newlineThe square root of 99 is 33, so we have:\newlinef(9)=9×3+4f(9) = 9 \times 3 + 4
  4. Multiply and add: Multiply and add to find the value of f(9)f(9).\newlineNow we perform the multiplication and addition:\newlinef(9)=27+4f(9) = 27 + 4\newlinef(9)=31f(9) = 31

More problems from Evaluate functions