Question

f(x)=(1/7)^x then what is f(-3)​

Answer 1

Answer:

$f(-3)=343$

Step-by-step explanation:

$f(x)=(\frac{1}{7} )^x$

Plug -3 into x and solve using the negative power rule:

$x^{-a}=\frac{1}{x^a}$

$f(-3)=(\frac{1}{7} )^{-3} \\\\f(-3)=\frac{1}{\frac{1}{7}^3 } \\\\f(-3)=\frac{1}{\frac{1}{343} } \\\\f(-3)=343$

Sorry, those fractions got very small. Let me know if I need to clarify anything there