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For the function​ f, find​ (a) ​f(5​), ​(b) ​f(0​), ​(c) ​f(minus7​), ​(d) f left parenthesis one half right parenthesis

​, and​ (e) f left parenthesis negative one fifth right parenthesis
.
​f(x)equals4xplus3

f(-1/5)=what. That's literally the question

1 answer

To find the values of the function \( f(x) = 4x + 3 \) for the specified inputs, you can simply substitute the values of \( x \) into the function. Let's calculate each one:

  1. (a) \( f(5) \):
    \[ f(5) = 4(5) + 3 = 20 + 3 = 23 \]

  2. (b) \( f(0) \):
    \[ f(0) = 4(0) + 3 = 0 + 3 = 3 \]

  3. (c) \( f(-7) \):
    \[ f(-7) = 4(-7) + 3 = -28 + 3 = -25 \]

  4. (d) \( f\left(\frac{1}{2}\right) \):
    \[ f\left(\frac{1}{2}\right) = 4\left(\frac{1}{2}\right) + 3 = 2 + 3 = 5 \]

  5. (e) \( f\left(-\frac{1}{5}\right) \):
    \[ f\left(-\frac{1}{5}\right) = 4\left(-\frac{1}{5}\right) + 3 = -\frac{4}{5} + 3 = -\frac{4}{5} + \frac{15}{5} = \frac{11}{5} \]

So the final answers are:

  • (a) \( f(5) = 23 \)
  • (b) \( f(0) = 3 \)
  • (c) \( f(-7) = -25 \)
  • (d) \( f\left(\frac{1}{2}\right) = 5 \)
  • (e) \( f\left(-\frac{1}{5}\right) = \frac{11}{5} \)