Use the functions f(x) = x + 7
and
g(x) = 2x − 9
to find the indicated function.
(g−1 ∘ f −1)(x)

You are designing a rectangular pet pen for your new baby puppy. you have 30 feet of fencing you would like the fencing to be 6 1/3 feet longer than the width

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Pls never taught i’m really confused and i rlly need