Question

Question 2 of 10Use the function below to find F(4).F(x)=5•(-)*5OA. 16OB.O C.O D.518532514

Answer 1

Solution:

Given:

$f(x)=5\cdot(\frac{1}{2})^x$

f(4) means substitute x = 4 into the function

Hence,

$\begin{gathered} f(4)=5\cdot(\frac{1}{2})^4 \\ f(4)=5\times(\frac{1}{2})^4 \\ f(4)=5\times\frac{1^4}{2^4} \\ f(4)=5\times\frac{1}{16} \\ f(4)=\frac{5}{16} \end{gathered}$

Therefore, the correct answer is OPTION A.