Question

How do you solve `7^ { x } - 7^ { x + 1} \leq - 6`?

Answer 1

`x>=log_7(55)-1`

Explanation:

`49-7^(x+1)<=-6`

`-7^(x+1)<=-6-49`

`-7^(x+1)<=-55`

`7^(x+1)>=55`

`x-1>=log_7(55)`