Determine (f o f-1)(x) and (f-1 o f)(x). my function is F(x)=2x+7

please show ur work bc I want to understand how to do this but I'm super confused

Which pair of angles are vertical angles? ∠1 and ∠4∠1 and ∠2∠2 and ∠4∠2 and ∠3more than one answer.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?