For this case we have a function of the form[tex]y = f (x)[/tex]
Where:
[tex]f (x) = 5 * (\frac {1} {2}) ^ x[/tex]
We must find the value of the function when x = 4, that is, f (4):
Substituting we have:
[tex]f (x) = 5 * (\frac {1} {2}) ^ 4\\f (x) = 5 * \frac {1} {2} * \frac {1} {2} * \frac {1} {2} * \frac {1} {2}\\f (x) = 5 * \frac {1} {16}\\f (x) = \frac {5} {16}\\f (x) = 0.3125[/tex]
ANswer:
[tex]f (x) = \frac {5} {16}\\f (x) = 0.3125[/tex]
