Question

Find each value if$f\left(x\right)=4x+3$ and $g\left(x\right)=5x-7$ .

$53.f\left(0.5\right)$

Short answer

The value of the expression $f\left(0.5\right)$ is $5$.

Step-by-step solution

Step-1 – Apply the concept of evaluating a function

To evaluate the function, take the original function, substitute the value in place of variable and simplify the expression.

Step-2 –Evaluate the expression.

Consider the expression $f\left(x\right)=4x+3$.

The objective is to find the value of $f\left(0.5\right)$.

Substitute x as $0.5$ in the function $f\left(x\right)=4x+3$

$f\left(0.5\right)=4\left(0.5\right)+3$

Step-3 – Simplify the expression

Multiply the terms on the right hand side and compute the value.

$\begin{array}{l}f\left(0.5\right)=4\left(0.5\right)+3\\ =2+3\\ =5\end{array}$

Hence, the value of the expression $f\left(x\right)=4x+3$ when $x=0.5$ is $5$.