Answer:
(2)
Step-by-step explanation:
Let f(x) = y → f-¹(x) = f(y) = x, f(y) is the inverse of f(x)
Thus,
=> -x³ - 9 = y
=> - y - 9 = x³
=> (-y - 9)^(1/3) = x
=> f(y) = x
Inverse is (-y-9)^(1/3)
Replacing the variable, inverse is (-x-9)^(1/3)
Option (2)
-7300
7x=56
56/7=8
x=8
104/x=answer
104/8=13
So after 104 beats there will be 13 measures
Answer: one value
8 - x = 9
collecting the like terms
x = 8 - 9
x = -1