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

Question

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

f(1/2)=what. That's literally the question

Answer 1

To find the values of the function $f(x)=4x+3$ at specific points, we can substitute the given values into the function.

(a) Finding $f(5)$: $$f(5)=4(5)+3=20+3=23$$

(b) Finding $f(0)$: $$f(0)=4(0)+3=0+3=3$$

(c) Finding $f(-7)$: $$f(-7)=4(-7)+3=-28+3=-25$$

(d) Finding $f\left(\frac{1}{2}\right)$: $$f\left(\frac{1}{2}\right)=4\left(\frac{1}{2}\right)+3=2+3=5$$

(e) Finding $f(-\frac{1}{5})$: $$f(-\frac{1}{5})=4(-\frac{1}{5})+3=-\frac{4}{5}+3=-\frac{4}{5}+\frac{15}{5}=\frac{11}{5}$$

So to summarize:

• $f(5)=23$
• $f(0)=3$
• $f(-7)=-25$
• $f\left(\frac{1}{2}\right)=5$
• $f(-\frac{1}{5})=\frac{11}{5}$