Question

1. If 5=a^x, then 5/a =(A) a^(x+1)(B) a^(x-1)(C) a^(1-x)(D) a*x/5

Answer 1

In order to calculate the value of 5/a, we need to use the following property of exponentials:

`(a^x)/(a^y)=a^(x-y)`

Now, calculating the value of 5/a, we have that:

`\begin{gathered} 5=a^x \\ \\ (5)/(a)=(a^x)/(a)=a^(x-1) \end{gathered}`

So the correct answer is B.